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Geohydrology of Grant and Stanton Counties

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Logs of Wells and Test Holes

The following are logs of 95 test holes drilled in Grant and Stanton counties. Sixty-nine of these test holes were drilled by the State and Federal Geological Surveys and are headed "Sample log of test hole in . . . "

These tests were logged by the authors during drilling and supplemented by studying the formation samples. Twenty-six of the test holes were drilled by commercial well drillers for individual land owners, and formation samples were collected; these are headed "Sample logs of test holes drilled by . . . " These 26 test holes were logged by the personnel of the Geological Survey from the formation samples and the descriptions may differ somewhat from that of the drillers.

In addition, 342 test holes drilled and logged by commercial well drillers are summarized in Table 19 and Table 20. An asterisk after the well number in Tables 19 and 20 indicates that a descriptive log is also included in this report, and an "e" after the altitude means that the altitude was estimated. Table 2 presents similar information from electrical and radioactivity logs.

Grant County

27-35-4bbb--Sample log of test hole drilled in NW NW sec. 4, T. 27 S., R. 35 W., 20 feet south and 20 feet east of NW cor. sec. 4; January 15, 1959; altitude of land surface, 3,060 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, sandy2020
Sand, fine to medium, silty; contains coarse grains5070
Sand, medium to very coarse, silty1080
Sand, very coarse, and fine gravel1393
Gravel, fine to coarse, and very coarse sand49142
Sand, fine to medium, silty47187
Silt, sandy, brown9196
Sand, fine to coarse, silty, and fine gravel52248
Sand, fine to coarse, silty; contains thin brown clay layers, 25273
Sand, fine to coarse, and fine gravel26323
Clay, silty, brown7330
Sand, fine to coarse, and fine gravel8338
Silt, sandy, brown5343
Sand, fine to coarse, and fine gravel19362
Pliocene
Ogallala Formation
Silt, clayey, tan-buff2364
Sand, fine to coarse3367
Sand, fine to medium; contains some coarse grains13380
Sand, fine to medium, and fine gravel; contains thin brown silt layers17+397
27-36-1bba--Sample log of test hole drilled by Mobil Oil Co. for shot hole test in NE NW NW sec. 1, T. 27 S., R. 36 W., 0.22 mile east and 35 feet south of NW cor. sec. 1; February 5, 1960; altitude of land surface, 3,079 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil33
Sand, fine to medium, silty, brown1215
Sand, fine to coarse1531
Sand, fine to medium; contains thin silt beds1546
Sand, medium to coarse, brown1662
Sand, silty, brown1072
Sand, medium to coarse; contains fine gravel577
Clay, silty, yellow582
Sand, coarse; contains fine gravel587
Sand, medium to coarse; contains pea gravel21108
Gravel, course; contains very coarse sand20128
Sand, coarse; contains fine to medium gravel26154
Clay3157
Clay, silty, tan; contains fine sand strips10167
Sand, medium to coarse; contains fine gravel and thin tan clay strips10177
Gravel, fine to medium; contains coarse sand13190
Clay, silty, yellow; contains beds of medium gravel and coarse sand16206
Gravel, fine to medium, and coarse sand8214
Clay, blue-gray33247
Sand, medium to coarse8255
Clay, blue-gray8263
Sand, coarse to medium5268
Clay, blue-gray2270
Sand, fine to medium; with a few blue clay layers10280
Clay, blue; with thin fine sand layers15295
Clay, blue-gray10305
Clay, tan; interbedded blue-gray clay2307
Sand, fine to medium4311
Clay, taii; interbedded blue-gray clay layers and thin fine sand layers8319
Sand, medium to coarse, and fine gravel; interbedded gray and tan silt53372
Pliocene
Ogallala Formation
Sand, fine to medium; with thin tan clay layers12384
Sand, coarse to medium10394
Clay, tan-gray9+403
27-37-26ca--Sample log of test hole drilled for Mobil Oil Co. in NE SW sec. 26, T. 27 S., R. 37 W., about 650 feet south and 650 feet west of center of sec. 26; 1959; altitude of land surface, 3,069 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil and tan silt1515
Clay and silt, brown3045
Clay, sandy, brown1560
Silt, sandy, brown1373
Sand, fine, brown780
Clay, hard, tan25105
Silt, tan, and gray clay strips15120
Silt, tan, and very fine sand10130
Silt, tan, and fine sand strips20150
Sand, very fine, silty, tan; contains a few thin brown clay strips38188
Sand, very fine, silty, gray15203
Sand, very fine, tan17220
Sand, fine, and caliche15235
Sand and fine gravel; contains caliche strips15250
Gravel17267
Pliocene
Ogallala Formation
Clay and caliche8275
Sand, coarse5280
Sand and fine gravel7292
Clay and caliche23+315
27-37-34ccc--Sample log of test hole drilled in SW SW sec. 34, T. 27 S., R. 37 W. at SW cor. sec. 34; 1942; allitude of land surface, 3,063 feet. Thickness,
feet
Depth,
feet
Undifferentiated Pleistocene
Soil, compact, silty, sandy, tan and brown11
Silt, compact, sandy, gray and brown; contains caliche910
Sand, fine, silty, brown313
Silt and fine sand, brown; contains caliche518
Silt, tan; contains caliche and sand layers1937
Sand, coarse340
Clay, compact, tan; contains silt and fine sand1050
Silt and clay, compact, sandy, tan2070
Silt, sandy, gray and green1080
Sand, very fine; contains brown silt20100
Silt, sandy, tan; contains caliche10110
Clay, gray; and brown, fine sand10120
Sand, fine, silty, tan10130
Silt, sandy, brown10140
Sand, very fine, silty, tan20160
Sand, very fine, silty, tan; contains clay layers15175
Sand, fine to medium; contains clay strips15190
Silt, very sandy, and gray clay10200
Pliocene
Ogallala Formation
Sand, fine, silty, tan13213
Sand, fine to coarse, brown7220
Silt and fine sand; contains caliche10230
Sand, coarse, brown8238
Sand and fine gravel27265
Gravel, fine to coarse, sandy; contains brown silt5270
Silt, sandy, yellow; contains caliche15285
Clay and silt; contains weathered fragments of sandstone15+300
27-38-15dad--Sample log of test hole drilled in SE NE SE sec. 15, T. 27 S., R. 38 W., 0.3 mile north and 25 feet west of SE cor. sec. 15; September 25, 1959, altitude of land surface 3,101 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, gray-brown1010
Silt, gray-brown, and fine to medium sand1020
Silt, brown-gray, and fine sand1030
Silt, clayey, tan, and fine sand3060
Sand, fine to medium, silty52112
Clay, tan; interbedded with buff, sandy silt20132
Sand, fine to medium, silty, tan5137
Silt, clayey, blue-gray25162
Sand, medium to coarse21183
Caliche3186
Silt, sandy, brown8194
Sand, medium to very coarse, and fine to medium gravel27221
Pliocene
Ogallala Formation
Silt, clayey, brown9230
Sand, fine to medium; contains caliche10240
Silt, clayey, brown13253
Sand, fine to coarse29282
Clay, silty, tan13295
Silt, clayey, tan; contains thin layers of silty sand and caliche78373
Cretaceous
Lower Cretaceous
Dakota Formation [Lower (?) Cretaceous]
Sandstone, brown to yellow, and brown shale48411
Sandstone, red-brown; contains thin layers of dark-brown shale26447
Shale, brown-red3450
Sandstone, brownish-red to gray13463
Kiowa Shale
Shale, hard, blue12+475
27-38-19db--Sample log of test hole drilled by Juel Water Well Drilling Co. for L. E. Annis in NW SE sec. 19, T. 27 S., R. 38 W., 0.26 mile north of S 1/4 cor. sec. 19; November 11, 1958; altitude of land surface, 3,134 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Sand, fine to meduim, silty, dark-gray1010
Sand, fine to coarse; some light-gray silt1020
Sand, very coarse, and fine gravel4060
Gravel, fine to medium, and very coarse sand3090
Sand, very coarse, and fine to very fine gravel10100
Silt, sandy, gray-brown; caliche-cemented20120
Sand, fine to coarse, and buff-tan silt32152
Sand, medium to coarse, and fine to medium gravel13165
Silt, sandy, brown4169
Sand, fine to coarse, silty, tan10179
Sand, fine to medium; with silt; caliche-cemented16195
Sand, very coarse to medium, and fine gravel; with some caliche-cemented beds37232
Sand, medium to coarse, interbedded with brown-tan silt16248
Pliocene
Ogallala Formation
Sand, fine, silty, buff-tan20268
Silt, very sandy, buff-tan; caliche-cemented15283
Sand, fine to medium; some coarse quartz grains, and buff-tan silt; some caliche-cemented layers34317
Silt, buff--tan, and fine to medium sand11328
Sand, fine to medium, and buff-tan silt13342
Cretaceous
Lower (?) Cretaceous
Dakota Formation
Shale, gray to yellow-brown; fine-grained sandstone, iron cemented28+360
27-38-25aaa--Sample log of test hole drilled in NE NE sec. 25, T. 27 S. R. 38 W., 25 feet west and 40 feet south of NE cor. sec. 25; September 16, 1959; altitude of land surface, 3,084 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, gray1010
Sand, brown515
Sand, brown, and silt520
Silt, brown6080
Silt, sandy, light-brown, and caliche1090
Silt, sandy, brown and gray20110
Silt, gray and brown20130
Silt, brown10140
Silt, brown, and very fine sand10150
Silt, blue and brown20170
Silt, hard, brown, and fine sand17187
Sand, fine3190
Sand, fine to coarse10200
Sand, fine to coarse, and brown silt10210
Sand, fine; contains a little brown clay10220
Pliocene
Ogallala Formation
Gravel, fine10230
Sand and gravel55285
Silt, pink2287
Sand3290
Sand and gravel8298
Caliche, hard12310
Silt, hard, brown and gray27337
Clay, red1338
Silt, hard, brown and gray12350
Silt, hard, brown; and some ironstone and sandstone chips30380
Silt, hard, brown, and ironstone chips21401
Cretaceous
Lower Cretaceous
Dakota Formation [Lower (?) Cretaceous]
Sandstone, hard, dark-brown3404
Shale, hard, brown and green streaks11415
Sandstone, hard, brown1416
Shale, brown7423
Sandstone, gray-brown2425
Shale, sticky, tan2427
Shale, hard, tan2429
Shale, very hard, tan0.5429.5
Shale, hard, black and brown10.5440
Shale, hard, brown and blue16456
Shale, sticky1457
Shale, hard, blue and brown streaks8465
Kiowa Shale
Shale, hard, dry, brown, blue, and white2467
Shale, hard, dry, brownish-yellow8475
Shale, soft, brown and blue streaks8483
Shale, hard, blue5488
Sandstone and shale streaks, hard6494
Sandstone, fine to coarse, friable4498
Shale, hard, blue10508
Shale, soft, blue2510
Shale, soft, sticky, blue20530
Cheyenne Sandstone
Sandstone, fine-grained, soft, white20550
Sandstone, fine-grained, granular, friable, limonitic, tan10+560
27-38-32ddd--Sample log of test hole drilled in SE SE SE sec. 32, T. 27 S., R. 38 W., SE cor. sec. 32; 1942; altitude of land surface, 3,121 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Soil, silty, gray11
Silt, sand, buff; containing gravel, sand, and clay1314
Clay, silty, compact, buff to tan620
Silt, fine, sandy, buff to tan1333
Silt, sand, and gravel; poorly sorted; oray to gray-green, tan, and buff3366
Silt, sandy, gray to brown, containing caliche470
Silt, sandy, gray and white, containing fine gravel777
Silt, sandy, compact, buff, containing a little caliche33110
Sand and gravel, fine to coarse, light gray to buff, containing silt30140
Silt, fine, sandy, buff to gray, containing gravel and a little clay40180
Silt, compact, dark-tan to brown, containing fragments of charcoal10190
Gravel, fine to coarse; containing buff to brown silt and fine sand40230
Silt, buff to tan, and fine gravel, containing sand24254
Pliocene
Ogallala Formation
Clay, compact, blocky, dark-tan to brown; contains silt and tan, and charcoal28282
Silt, sandy to clayey, compact, dark tan, containing caliche2290
Silt, white to buff, and medium to coarse gravel; contains sand, caliche, and clay10300
Sand, fine to very fine, semiconsolidated, red-brown to yellow; contains much silt and clay10310
Clay, in part sand, dark-tan to brown and red; contains fragments of yellow-brown sandstone and ironstone30340
Sand, fine to coarse, partially cemented, yellow-brown to dark rusty brown; contains a little silt and clay10350
Clay, silty, compact, gray to tan, contains fragments of fine sandstone and ironstone10360
Clay, silty, yellow; contains a few fine sandstone fragments10370
Cretaceous
Lower Cretaceous
Kiowa Shale
Shale, silty, soft, dark-brown15385
Shale, sandy, soft, gray15400
Shale, clayey, fissile, soft, gray to dark-gray, containing fragments of pyrite and charcoal50450
Shale, fine sandy, gray30480
Shale, fissile, soft, dark-gray to black, containing streaks of white sandstone22.5502.5
Shale, clayey to fine sandy, soft, light-gray and gray7.5510
Shale, clayey, dark-gray to black10520
Cheyenne Sandstone
Sandstone, fine to coarse, friable10530
Sandstone, fine, friable, white33563
Shale, clayey, soft, light-gray and light-green7570
Sandstone, fine, friable, white20590
Triassic
Upper Triassic
Dockum Group
Sandstone, very fine, hard, white1.5591.5
Shale, silty to clayey, soft, light-gray and green, containing streaks of hard sandstone6.5598
Siltstone, soft, red2+600
28-35-10bbd--Sample log of test hole drilled by Juel Water Well Drilling Co. for C. L. Dew in NW NW sec. 10, T. 28 S., R. 35 W., 0.2 mile south and 0.2 mile east of NW cor. sec. 10; September 1959; altitude of land surface, 3,102 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil and gray silt1010
Silt, brown, and caliche1020
Silt, light grayish-brown1030
Silt, caliche and coarse sand2050
Silt, brown and gray2070
Sand, fine to medium1080
Sand, fine to coarse30110
Sand and fine gravel10120
Sand, coarse18138
Clay, silty, brown10148
Sand, coarse, and fine gravel16164
Sand, fine, and brown silt5169
Clay, brown9178
Sand, medium to coarse14192
Clay, silty, brown5197
Sand, medium, silty, brown-tan38235
Clay, silty, brown20255
Sand, medium to coarse, and fine gravel30285
Clay, hard, brown13298
Clay, silty, brown47345
Sand, fine, brown10355
Pliocene
Ogallala Formation
Clay, silty, sandy, brown, containing fine sand strips53408
Clay, hard, silty, brown37445
Clay and light-gray silt strips10455
Clay, sandy, silty, containing fine to coarse sand strips55510
Clay, hard, silty, brown, containing fine sand strips85595
Cretaceous
Lower Cretaceous
Kiowa Shale
Shale, hard, blue-gray39634
Cheyenne Sandstone
Sandstone and shale, hard (Drilled for 1/2 hour at 648 feet; fishtail bit would not penetrate.)14+648
28-35-27bb--Sample log of test hole drilled by Juel Water Well Drilling Co. for Rolla Ulsh in NW NW sec. 27, T. 28 S., R. 35 W., 95 feet south and 100 feet east of NW cor. sec. 27; November 13, 1958; altitude of land surface, 3,041 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, gray, fine sand, and white caliche1313
Silt, brown, fine sand, and white caliche1023
Sand, fine to medium, reddish-brown1033
Sand, medium to coarse1 1043
Sand, medium to coarse, and fine gravel1053
Sand, medium to coarse, and fine to medium gravel1063
Sand, fine to coarse107
Sand, fine to coarse, and fine to medium gravel1083
Sand, medium to coarse, and fine to medium gravel1093
Sand, medium to coarse, and fine to coarse gravel20113
Sand, medium to coarse, and fine gravel10123
Silt, sandy, brownish-gray10133
Sand, fine, and gray to brown silty clay10143
Clay, silty, gray to brown, and brown silt5148
Sand, very coarse, and fine gravel15163
Clay, silty, gray to brown, and brown silt10173
Silt, sandy, brown10183
Silt, sandy, brown, and gray to brown clay10193
Sand, fine to coarse11204
Gravel, very coarse13217
Silt, sandy, brown6223
Sand, coarse, and fine to medium gravel20243
Clay, gray to limonite-brown9252
Gravel, coarse to very coarse, quartz and red granite pebbles21273
Clay, gray to brown, and fine sand10283
Sand, medium to coarse, caliche-cemented10293
Sand, fine to coarse10303
Sand, very coarse, and fine gravel17320
Pliocene
Ogallala Formation
Clay, silty, brown18338
Sand, coarse, and fine to coarse gravel6344
Clay, sandy, dark-brown to gray9353
Clay, brown, greenish-gray to light-gray, and very fine sand10363
Sand, fine to medium, and caliche30393
Clay, brown to gray; contains sandstone fragments10403
Sand, fine,loose10413
Clay, sandy, dark-brown10423
Clay, dark-brown to gray, containing sandstone fragments20443
Sand, fine to medium, loose104-33
28-36-2bbb--Sample log of test hole drilled in NW NW sec. 2, T. 28 S., R. 36 W.; 1942; altitude of land surface, 3,119 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Soil, fine, sandy, black22
Silt, fine, brown; some caliche1214
Silt, sandy, gray and tan, and fine sand2943
Silt, sandy, tan; contains sand and caliche1962
Sand, coarse, and fine gravel1880
Gravel, fine to very coarse1191
Sand, coarse, cemented293
Silt, soft, sandy, gray and yellow17110
Sand, fine to coarse; contains silt10120
Sand, coarse; some fine gravel10130
Sand, coarse, tan-white17147
Caliche and clay, hard, light-gray and white3150
Silt, soft, varicolored; some sand10160
Sand, coarse, and fine gravel7167
Silt and clay, white-gray23190
Sand, coarse to fine gravel24214
Sand, coarse, and soft, sandy, red, tan, and yellow-brown silt8222
Silt, sandy, tan and light-gray, containing coarse sand18240
Sand, coarse8248
Silt, hard, sandy, gray, containing coarse sand7255
Sand, coarse, red-brown and white25280
Silt, soft, blue-oray to tan and yellow-brown20300
Sand, fine gravel, and soft gray-tan and yellow-brown clay18318
Pliocene
Ogallala Formation
Sand, fine to medium, cemented4322
Sand, coarse, containing some silt18340
Sand, coarse, and fine gravel28368
Sand, coarse, tan; some silt20388
Silt, soft, sandy, tan8396
Sand, coarse10406
Clay, brown, containing limonite3409
Silt, hard, sandy, tan to white21430
Silt, clayey, tan10440
Silt, clayey, tan; some sand10450
Silt, sandy, tan; fragments of caliche20"470
Silt, hard, clayey10480
Cretaceous
Lower (?) Cretaceous
Dakota Formation
Siltstone, fine, sandy, varicolored, and hard yellow-brown sandstone, containing fragments of sandstone10+490
28-36-17bbb--Sample log of test hole drilled in NW NW sec. 17, T. 28 S., R. 36 W., 33 feet south and 70 feet east of NW cor. sec. 17; 1959; altitude of land surface, 3,087 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Sand, fine, brown; dune sand1010
Silt, gray-brown1020
Silt, tan, and caliche3555
Sand, coarse, brown, red, and pea gravel1570
Silt, sandy, brown; with fine to medium sand strips1787
Sand, coarse, tan895
Silt, sandy, brown398
Sand, limey, tan5103
Silt, sandy, brown, and fine sand25128
Sand, very fine, tan, with clay strips27155
Silt, brown, and clay10165
Sand, fine, brown, with few coarse grains15180
Silt, sandy, brown and gray26206
Clay, brown and gray6212
Silt, sandy, brown and gray15227
Clay, silty, blue, brown, and gray25252
Sand, fine to coarse, gray5257
Pliocene
Ogallala Formation
Clay, silty, brown and gray20277
Sand, silty, brown and gray10287
Sand, fine to medium, brown; some caliche20307
Clay, silty, brown3310
Sand, fine to medium; some coarse sand strips25335
Sand, silty, brown-tan12347
Silt and clay, brown5352
Sand, fine, brown20372
Clay, brown5377
Sand, fine to coarse, tan and white33410
Sand, coarse, brown, containing sandstone fragments10420
Cretaceous
Lower Cretaceous
Dakota Formation [Lower (?) Cretaceous]
Siltstone and sandstone, blue-gray10430
Kiowa Shale
Shale, hard, blue20+450
28-36-35ccc--Sample log of test hole drilled in SW SW sec. 35, T. 28 S., R. 36 W., at SW cor. sec. 35; 1942; altitude of land surface, 3,052 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Soil, fine, sandy, black33
Silt, soft, gray-brown58
Silt, hard, blocky, gray-green210
Silt, soft, yellow-brown; with some caliche1727
Silt, soft, sandy, red-brown, with some caliche1643
Sand, coarse, and gravel; contains clayey gray-brown silt1760
Sand, coarse, and gravel2181
Clay, hard, tan19100
Silt, soft, sandy, light-tan24124
Sand, medium to coarse7131
Silt, hard, blocky, tan and buff to gray68199
Silt, soft, clayey, tan-gray11210
Silt, hard, blocky, gray to brown, containing some fine sand42252
Clay, hard, tan and green28280
Silt, fine, sandy, light-brown20300
Silt, clayey to sandy, light-gray and brown, containing a little sand30330
Silt, sandy, tan10340
Sand, coarse, and small gravel5345
Pliocene
Ogallala Formation
Sand, coarse, and gravel; with light-gray silt strips15360
Sand, fine, brown; with silt and caliche strips16376
Clay, hard, laminated, gray-green4380
Sand, fine to medium, containing hard gray silt20400
Clay, soft, varicolored, containing sandstone and ironstone fragments20+420
28-37-5bcc--Sample log of test hole drilled by Juel Water Well Drilling Co. for C. E. Hoffman in SW NW sec. 5, T. 28 S., R. 37 W., 10 feet north and 200 feet east of W 1/4 cor. sec. 5; September 1959; altitude of land surface, 3,072 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil, silt, and clay3434
Clay842
Sand, fine547
Clay, silty, brown; fine sand1360
Clay, silty, gray; fine sand565
Sand, fine to brown1075
Clay, brown1792
Sand, fine, silty, brown12104
Clay, gray18122
Sand, fine to medium, brown6128
Clay, silty, brown6134
Silt, sandy; some clay strips23157
Clay, gray3160
Sand, fine, brown to gray14174
Clay and silt strips, brown26200
Clay, gray; fine sand strips7207
Sand, fine, brown, and caliche5212
Sand, fine, brown8220
Sand, medium, brown13233
Sand, fine, brown, and silt strips12245
Sand and coarse gravel15260
Pliocene
Ogallala Formation
Clay, silt, fine sand, and caliche strips12272
Clay, silty, brown10282
Sand, fine, brown; some caliche15297
Clay, silty4301
Sand, coarse, and fine gravel10311
Clay and silt5316
Sand, fine, silty, brown6322
Clay, brown8+330
28-37-17cb--Sample log of test hole drilled by Red Swearengen for E. M. Farrar (V. D. Sullivan) in NW SW sec. 17, T. 28 S., R. 37 W., 0.25 mile east of W 1/4 cor. sec. 17; November 1958; altitude of land surface, 3,089 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil, silty, gray1010
Sand, fine, silty, brown2333
Clay, brown336
Sand, fine, silty, brown844
Clay, hard, brown; silty sand strips1660
Sand, coarse, brown; mostly quartz1575
Clay, brown1085
Sand, fine, brown, and clay strips23108
Clay, sandy, brown15123
Clay, hard, gray12135
Clay, silt, and fine brown sand strips30165
Clay, hard, brown13178
Clay, sandy, gray9187
Sand, fine, silty, gray13200
Clay, blue; brown silt strip10210
Clay, brown and gray; fine sand strips18228
Clay, silty, brown17245
Sand, fine to medium; some silty clay strips15260
Sand, coarse, and fine gravel20280
Pliocene
Ogallala Formation
Sand, fine, clay and caliche strips20300
Sand, fine, brown6306
Clay, silty, gray14320
Sand, fine, brown; some caliche8328
Sand and fine gravel17345
Clay, silty, brown10355
Sand, fine, brown; some clay15370
Sand, coarse, and fine gravel16386
Cretaceous
Lower Cretaceous
Kiowa Shale
Shale, blue40426
Shale, blue, and sandstone strips50476
Cheyenne Sandstone
Shale and sandstone strips69+545
28-37-21daa1--Sample log of test hole drilled by Juel Water Well Drilling Co. for the City of Ulysses in NE SE sec. 21, T. 28 S., R. 37 W., near E 1/4 cor. sec. 21; 1959; altitude of land surface, 3,056 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Sand, fine to medium, brown; some clay strips2020
Clay, silty, brown, and fine sand strips2747
Clay, hard, brown-tan754
Sand, silty, brown660
Clay, hard, brown2080
Clay, hard, gray, and caliche1090
Clay, silty, gray10100
Clay, gray, and silt10110
Clay, gray, and very fine sand15125
Sand, fine to medium, gray10135
Clay; brown and gray strips10145
Sand, fine to coarse, brown15160
Sand, silty10170
Sand, very fine, gray10180
Sand, fine, brownish-red10190
Sand, fine to medium; some caliche10200
Clay and silt, brown; thin strips of fine sand15215
Sand, fine, brown20235
Clay, silty, brown5240
Sand and gravel20260
Pliocene
Ogallala Formation
Clay, silty, brown10270
Clay, silt, and caliche10280
Clay, fine sand, and caliche10290
Clay, brown10+300
28-37-21db1--Sample log of test hole drilled by Juel Water Well Drilling Co. for City of Ulysses in NW SE sec. 21, T. 28 S., R. 37 W., 0.4 mile west and 25 feet south of E 1/4, cor. sec. 21; 1959; altitude of land surface, 3,060 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
No log100100
Clay, gray11111
Clay, hard, blue18129
Clay, silty, gray; some fine sand strips19148
Sand, fine to medium, brown; some caliche17165
Sand, medium to coarse, brown17182
Sand, fine sand, silt, and caliche13195
Sand, very fine, brown5200
Sand, fine, silty, brown; few thin clay strips15215
Sand, coarse, brown8223
Clay, silty, br wn7230
Sand and fine gravel15245
Pliocene
Ogallala Formation
Clay, silty, brown; some fine sand and caliche23268
Sand, fine, brown10278
Sand, fine, brown, and caliche strips12290
Sand, medium to coarse, and fine gravel22312
Clay, silty, brown2314
Sand, coarse, and fine gravel8322
Clay, hard, tan-yellow4326
Clay, silty, tan-yellow12338
Clay, hard, tan12+350
28-37-26bcc--Sample log of test hole drilled by Juel Water Well Drilling Co. for the City of Ulysses in SW NW sec. 26, T. 28 S., PL. 37 W., 10 feet north and 150 feet east of W 1/4 cor. sec. 26; 1959; altitude of land surface, 3,039 feet. Thickness,
feet
Depth,
feet
Neogene
Upper Pleistocene(?)
Topsoil and silt, gray1010
Sand, fine, silty, brown2030
Sand, fine brown1040
Sand and fine gravel, silty1050
Lower Pleistocene(?)
Clay, hard, gray1060
Clay, silty, brown40100
Silt and fine sand, brown15115
Sand, fine to medium, brown15130
Clay, silty, gray-brown20150
Clay, silty, gray; some fine gray sand30180
Sand, fine to medium, brown20200
Clay, hard, brown20220
Clay, silty, brown20240
Sand and fine gravel10250
Pliocene
Ogallala Formation
Clay. fine sand, and caliche20270
Sand, fine to medium, brown10280
Sand, medium, and clay strips10290
Clay, caliche and silt10300
Clay, brown; some sandstone and ironstone fragments5+305
28-37-26dcc--Sample log of test hole drilled in SW SE sec. 26, T. 28 S., R. 37 W., 0.4 mile west and 25 feet north of SE cor. sec. 26; September 1959; altitude of land surface, 2,975 feet. Thickness,
feet
Depth,
feet
Neogene
Upper Pleistocene (?)
Clay and silt, gray1010
Lower Pleistocene (?)
Silt and fine sand, brown1020
Sand, fine, silty, brown1030
Sand, coarse, brown, and fine gravel1040
Clay, brown, and silt545
Silt, brown, and fine sand2065
Clay, silty, gray469
Silt, brown, and fine sand1180
Clay and silty sand; gray1595
Clay, brown13108
Sand, fine to coarse20128
Clay, silty4132
Sand, fine, silty, brown6138
Clay, brown4142
Silt, sandy, gray6148
Clay, blue11159
Sand, fine, brown6165
Clay, brown7172
Sand, medium to coarse13185
Sand, fine, silty, and thin silt strips13198
Clay, brown8206
Sand, coarse, and small gravel12218
Clay, silty, brown3221
Sand, coarse, and gravel7228
Pliocene
Ogallala Formation
Clay, silty, brown; some caliche13241
Sand, medium to coarse, brown49290
Clay, silt, and caliche10+300
28-37-34ccc--Sample log of test hole drilled in SW SW sec. 34, T. 28 S., R. 37 W., near SW cor. sec. 34; 1942; altitude of land surface, 2,996 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Soil, sandy, brown-black33
Gravel, fine to medium, and fine sand58
Silt, compact, light tan to gray, containing fine sandy clay210
Sand, fine to medium, tan212
Silt, compact, light-tan and buff, containing fine sand and clay1830
Sand, fine to coarse, red-brown, containing buff silt333
Silt, sandy, compact, containing buff clay740
Silt, sandy, buff, and fine to coarse sand; contains fine to coarse gravel1959
Sand, fine to coarse, containing fine gravel and buff silt41100
Silt, light-gray, and brown fine to coarse sand10110
Sand, fine to coarse, brown6116
Silt, sandy, compact, gray to tan44160
Silt, clayey, compact, tan, containing sand45205
Gravel and sand, fine to coarse, containing silt and caliche28233
Pliocene
Ogallala Formation
Silt, sandy, compact, gray and yellow-tan; contains sand, fine to coarse gravel, and caliche7240
Gravel, fine to coarse and fine sand; contains red-tan silt10250
Silt, sandy, light-gray to tan, containing caliche40290
Silt, clayey, compact, gray-green and dark tan, containing caliche11301
Gravel, fine to medium, containing fine sand, silt, and caliche18319
Silt, clayey, yellow-tan, containing fragments of ironstone and sandstone11+330
28-38-6dc2--Sample log of test hole drilled by Arnold Drilling Co. for O. P. Williams in SW SE sec. 6 T. 28 S., R. 38 W., 1,650 feet west and 125 feet north of SE cor. sec. 6; 1960; altitude of land surface, 3,133 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, gray55
Silt, tan, and caliche1015
Silt, gray-brown1530
Sand, fine to medium1040
Silt, brown62102
Sand, very fine, brown3105
Silt, brown37142
Sand, fine, brown3145
Clay, brown5150
Sand, fine, brown15165
Silt, brown20185
Sand, fine to medium, brown22207
Silt, brown3210
Silt, brown, and caliche20230
Sand, coarse10240
Sand, coarse, and medium gravel8258
Pliocene
Ogallala Formation
Silt, brown2+260
28-38-16db3--Sample log of test hole drilled by Juel Water Well Drilling Co. for Mrs. T. M. Halliday in NW SE sec. 16, T. 28 S., R. 38 W., 0.49 mile west and 0.36 mile north of SE cor. sec. 16; November 11, 1958; altitude of land surface, 3,103 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Sand, fine to medium, silty, buff-tan2020
Sand, fine to medium; with thin layers of buff-tan silty clay5474
Sand, coarse to medium, and buff-tan clayey silt983
Sand, coarse to medium; with some buff-tan silt1295
Sand, coarse to very coarse; with buff-tan silt7102
Sand, very coarse to medium; with buff-tan silt16118
Sand, very coarse to coarse4122
Sand, coarse to very coarse; with light-tan silt11133
Silt, sandy, clayey, tan-brown7140
Clay, silty, gray25165
Silt, sandy, tan-brown25190
Sand, very coarse to medium22212
Silt, sandy, brown12224
Gravel and very coarse sand9233
Pliocene
Ogallala Formation
Silt, sandy, red-brown7240
Silt, sandy, caliche-cemented, buff-tan9249
Silt, sandy, red-brown22271
Silt, sandy, caliche-cemented, buff-tan11282
Silt, clayey, sandy, tan9291
Silt, clayey, tan14305
Sand, very coarse to coarse13318
Silt, tan10328
Silt, fine sandy, buff-tan13341
Sand, very coarse, and fine gravel9350
Gravel, medium to coarse, and very coarse sand14364
Gravel, medium to coarse, very silty, and fine to coarse sand6370
Cretaceous
Lower Cretaceous
Kiowa Shale
Shale, silty, dark-gray to black30400
Sandstone, medium to fine, silty, clayey, friable, light-brown; interbedded with thin black shale layers9409
Shale, silty, sandy, dark-gray to black11420
Sandstone, medium to fine, silty, clayey, friable, light-brown; interbedded with thin black shale layers9429
Shale, silty, dark-gray to black11440
Cheyenne Sandstone
Sandstone, very fine to coarse, friable; interbedded with a dark-gray silty sandstone11451
Sandstone, fine to medium; with limonite cement and very fine to coarse friable sandstone which is interbedded with a dark-gray silty sandstone79530
Triassic
Upper Triassic
Dockum Group
Sandstone, fine to medium, silty, pink-tan40+570
28-38-24bbb--Sample log of test hole drilled in NW NW sec. 24, T. 28 S., R. 38 W., 70 feet south and 15 feet east of NW cor. sec. 24; June 1960; altitude of land surface, 3,082 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil, sandy (dune sand)66
Clay, brown-tan1016
Sand, fine, brown, and sandy clay319
Clay, brown827
Sand, fine, brown734
Clay, sandy, brown, and gray, fine sand strips1044
Sand, fine to coarse, white-tan; some caliche and clay strips1862
Sand, fine, and brown clay strips1072
Sand, fine, brown; thin clay and sandy clay strips1082
Sand, fine to medium, brown688
Clay, sandy290
Sand, medium, brown10100
Clay, sandy, and thin strips of fine sand7107
Clay, gray16123
Sand, fine, sandy clay and clay strips6129
Clay, hard, brown; thin strips of fine sand14143
Clay, hard, gray5148
Clay, brown, and gray strips; thin strips of fine brown sand38186
Clay, sandy, brown, and medium sand strips17203
Clay, brown and tan; thin strips of sandy clay8211
Clay, sandy, brown8219
Clay, sandy, brown; thin layers of fine sand13232
Sand, fine, brown, and caliche3235
Sand2237
Clay, sandy, brown3240
Sand, medium, hard (cemented?), brown7247
Sand and fine gravel35282
Pliocene
Ogallala Formation
Clay, sandy, brown3285
Sand, coarse, and fine gravel; brownish-red11296
Clay, sandy, brown4300
Sand and fine gravel8308
Clay, brown; blue and tan strips; thin strips of sandy clay and fine sand27335
Sand, fine, gray3338
Clay, brown4342
Sand, fine, brown, and clay strips14356
Sand, fine, loose, brown5361
Sand, fine to coarse; a few thin clay strips9370
Sand, coarse, brown-tan; few thin clay strips15385
Clay, brown, blue, and yellow; thin strips of sandy clay8+394
28-38-32bbb--Sample log of test hole drilled in NW NW NW sec. 32, T. 28 S., R. 38 W., 0.1 mile south and 30 feet east of NW cor. sec. 32; October 1959; altitiide of land surface, 3,109 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Clay, gray, and brown silt1010
Clay, silty, brown-gray1525
Sand, medium to fine1035
Silt, clayey, sandy, gray; caliche zones944
Sand, medium to fine347
Silt, sandy, brown350
Silt, sandy, brown, and sand streaks1060
Sand, fine to very fine1070
Sand, fine to medium; with brown silt2090
Sand, fine to medium12102
Clay, tan-brown; with some fine sand layers18120
Sand, fine to medium; with brown silt7127
Silt, clayey, brown; with sand strips10137
Clay, browna140
Silt, clayey, brown; with thin sand strips20160
Clay, silty, gray-brown30190
Sand, coarse to medium15205
Clay, silty, brown, light-brown; with some clay layers and thin sand layers25230
Pliocene
Ogallala Formation
Sand, fine to medium, silty, tan-buff; cemented with caliche30260
Sand, fine to medium, silty, tan-buff; some beds cemented with caliche30290
Sand, fine to coarse; with layers of buff-tan clayey silt30320
Sand, medium to coarse; with layers of brown silt40360
Sand, medium to fine; with layers of brown silt20380
Sand, coarse to very coarse; with fine to medium gravel20400
Cretaceous
Lower Cretaceous
Kiowa Shale
Shale, gray and brown; contains very fine to medium sandstone streaks40+440
29-35-1aaa--Sample log of test hole drilled in NE NE sec. 1, T. 29 S., R. 35 W., near NE cor. sec. 1; 1942; altitude of land surface, 3,013 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Silt, compact, sandy; contains blue-,gray clay1010
Silt, soft, sandy, light-brown; contains some caliche3343
Sand, fine to coarse; contains some silt and caliche750
Sand, coarse, and gravel1565
Sand, coarse45110
Sand, coarse, and large gravel28138
Silt, sandy, tan; contains some clay32170
Clay, compact, gray10180
Clay, compact, brown, and interbedded gray clay layers90270
Sand, coarse, and some fine gravel40310
Clay and silt, tan10320
Sand, coarse, and fine to coarse gravel55375
Pliocene
Ogallala Formation
Silt, compact, sandy, brown; contains some clay and caliche5380
Sand, fine to coarse10390
Sand, coarse, and fine gravel30420
Clay and silt, varicolored; contains fragments of sandstone and ironstone20440
Clay and interbedded coarse sand strips11451
Silt, compact, dark-brown9460
Clay, soft, yellow and white; contains hard yellow-brown sandstone fragments40500
Clay, fine sandy, hard, gray; contains yellow-brown siltstone fragments20520
Silt, clayey, gray, sand and fine gravel; contains weathered Dakota fragments50570
Cretaceous
Lower Cretaceous
Kiowa Shale
Shale, clayey, dark-gray to black; contains sandy shale52622
Shale, soft, clayey, gray21643
Shale and fine-grained sandstone, white to gray46689
Permian
Cimarronian
Big Basin Formation
Siltstone, soft, clayey, brick-red11+700
29-35-14db--Sample log of test hole drilled by C. K. Minter Drilling Co. for E. H. Miller in NW SE sec. 14, T. 29 S., R. 35 W., 0.48 mile west and 0.4 mile north of SE cor. sec. 14; August 20, 1960; altitude of land surface, 3,049 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil; consists of sandy silt33
Sand, medium to very fine, tan, brown3235
Silt, clayey, brown; with very fine sand1045
Silt, clayey, buff-tan, containing caliche752
Silt, sandy, brown, containing caliche and thin tan clay layers1870
Silt and medium to fine sand, containing thin caliche layers1585
Sand, medium to fine, containing thin silty clay layers and thin layers of caliche35120
Sand, medium to coarse, with thin silty caliche layers10130
Gravel, fine to medium, and very coarse sand10140
Sand, very coarse, and fine gravel20160
Silt, clayey. yellow, and caliche; contains fine sand layers10170
Gravel, fine; with very coarse to coarse sand20190
Gravel, fine to medium; with very coarse to coarse sand20210
Clay, silty, blue-gray20230
Silt, clayey, tan; with strips of fine sand and blue-gray clay40270
Sand, very fine to medium, silty10280
Clay, silty, tan; with strips of blue-gray clay13293
Sand, very coarse; with some fine gravel7300
Clay, tan; with strips of blue-gray clay10310
Sand, fine to medium, silty10320
Clay, tan5325
Sand, very coarse to coarse and fine gravel25350
Gravel, fine to medium, and very coarse sand10360
Gravel, fine, and very coarse sand10370
Gravel, fine to medium, and very coarse sand19389
Silt, tan-brown, with strips of gray clay and fine sand31420
Gravel, fine, and fine to medium sand; with strips of tan clay15+435
29-35-15aba--Sample log of test hole drilled in NE NW NE sec. 15, T. 29 S., R. 35 W., 25 feet south and 0.3 mile west of NE cor. sec. 15; December 2, 1959; altitude of land surface, 3,032 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil and sandy silt; contains organic matter88
Silt, sandy, buff-brown412
Silt, sandy; with caliche820
Silt and fine sand, buff-brown; with caliche929
Sand, fine, and silt; buff-brown; with caliche736
Sand, fine, silty, buff-brown1652
Caliche355
Sand, fine to medium, silty, brown; with small caliche strips2580
Sand, fine to medium, silty, brown1292
Silt, sandy, buff -brown10102
Sand, fine to medium, silty, buff-brown6108
Sand, medium to coarse4112
Sand, very coarse to medium, and fine to medium gravel18130
Gravel, fine to medium, and coarse to very coarse sand20150
Gravel, large to fine, and very coarse sand20170
Gravel, fine to large; with some coarse sand8178
Gravel, medium to large, and coarse sand; drilled hard in layers7185
Gravel, fine to medium, and coarse sand; with thin sandy clay layers7192
Gravel, fine to medium, and coarse sand19211
Silt, sandy, buff-brown; with brown clay layers12223
Silt, sandy, buff-brown; with fine sand strips19242
Sand, fine to medium, silty8250
Silt, tan3253
Sand, fine, brown2255
Silt, tan3258
Silt, sandy, tan; with tan elay layers7265
Sand, medium to very coarse; with tan silt10275
Sand, medium to coarse, silty13288
Sand, medium to coarse; with a few thin sandy clay strips17305
Clay, silty, buff-brown3308
Sand, coarse to very coarse, and fine to medium gravel17325
Clay, silty, buff-brown4329
Sand, coarse to very coarse, and gravel6335
Silt, tan; drilled easy30365
Sand, medium to fine, slightly cemented with caliche3368
Silt, sandy, buff-brown; drilled easy4372
Sand, medium to fine, silty7379
Sand, medium to coarse, with fine gravel6385
Gravel, fine to medium, and medium to very coarse sand70455
Pliocene
Ogallala Formation
Silt, sandy, buff-tan11466
Clay, hard, brown4+470
29-35-19dc--Sample log of test hole drilled in SW SE sec. 19, T. 29 S., R. 35 W., 30 feet north and 0.48 mile west of SE cor. sec. 19; May 2, 1960; altitude of land surface, 3,027 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Topsoil, silty, sandy; contains organic material33
Sand, fine to medium, silty, brown2225
Sand, very fine to medium, silty, brown732
Sand, fine to medium, light-brown840
Sand, fine, silty, light-brown; with caliche1050
Silt, sandy, light-brown1262
Silt, buff-brown; with thin coarse sand strips365
Silt, sandy, buff-brown772
Silt, tan880
Clay, silty, brown1595
Sand, medium to coarse12107
Clay, tan; drilled easy63170
Clay, dark brown; with some small strips of gray clay38208
Clay, dark brown, hard; with some soft gray clay strips20228
Clay, brown; with thin strips of sandy clay22250
Clay, brown; with thin strips of very sandy tan clay and some soft blue-gray clay14264
Sand, coarse1265
Clay, brown; with thin strips of loose, coarse sand15280
Sand, coarse to medium; with thin brown clay strips12292
Clay, tan-gray, soft5297
Clay, brown10307
Clay, sandy, brown2309
Silt, clayey, gray; with fine sand and sandy clay strips16325
Clay, blue, hard5330
Clay, sandy, brown; with blue clay strips8338
Clay, blue, and thin sand and sandy clay strips17355
Clay, tan-brown, hard; with sandy clay and fine sand strips15370
Sand, coarse to medium; with hard, brown clay strips15385
Sand, coarse to medium; drilled easy5390
Pliocene
Ogallala Formation
Silt, sandy; drilled easy10400
Clay; with sandy clay strips5405
Sand, fine to coarse; with fine gravel25430
Sand, coarse to very coarse and fine to medium gravel47477
Clay, silty, yellow3480
Sand, coarse to medium, slightly cemented by caliche; drilled hard10490
Clay, brown to gray; drilled easy25515
Clay, gray, and strips of tan clay; drilled hard10525
Sand, fine silty, brown; drilled easy5+530
29-3 5-24bc--Sample log of test hole drilled by Juel Water Well Drilling Co. for H. Miller in SW NW sec. 24, T. 29 S., R. 35 W., 0.2 mile east and 0.4 mile south of NW cor. sec. 24; December 1958; altitude of land surface, 3,037 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Surface, topsoil1010
Silt, clayey, buff-tan; with strips of caliche4353
Sand, fine to medium, silty, buff-tan1164
Silt, clayey; with silty sand strips2185
Silt, clayey, light-brown, with fine sand strips1095
Silt, clayey, and fine sand15110
Sand, fine to medium10120
Sand, medium to coarse20140
Sand, medium to fine10150
Sand, coarse to very coarse; with fine gravel30180
Silt, clayey, light-brown; with silty sand strips15195
Gravel, fine, and coarse to very coarse sand12207
Silt, sandy, light-brown6213
Sand, fine to medium; with gravel11224
Silt, sandy, light-brown6230
Sand, fine to medium, and fine gravel20250
Silt, light-brown, and caliche5255
Silt, clayey, gray7262
Sand, medium to coarse, and fine gravel16
Silt, clayey, gray-tan2280
Sand, medium to coarse, and fine gravel13293
Silt, clayey, gray-tan2295
Sand, medium to coarse, and fine gravel7302
Clay, silty, gray5307
Gravel, fine to medium, and coarse to very coarse sand85392
Clay, silty, tan2394
Sand, coarse to medium; with some fine gravel11405
Clay, silty, tan2+407
29-35-28aa--Sample log of test hole drilled in NE NE sec. 28, T. 29 S., R. 35 W., 100 feet west and 35 feet south of NE cor. sec. 28; May 30, 1960; altitude of land surface, 2,988 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Topsoil, sandy, silty; contains organic material22
Caliche13
Silt, soft, rust-brown69
Sand, very fine to fine, silty, light-brown615
Sand, fine to medium, silty, brown217
Sand, fine to medium, silty, and caliche825
Sand, fine to medium, and a strip of tan silt530
Clay, silty, tan333
Clay, hard, brown1346
Clay, brown, and thin strips of fine sand652
Sand, fine, and brown clay strips860
Sand, medium to coarse, and brown clay strips and gravel666
Clay, silty, gray369
Sand, medium to coarse, and thin clay strips574
Sand, coarse478
Clay, silty, tan482
Sand, medium to coarse, and fine gravel688
Clay, silty, gray-tan492
Sand, fine to medium, reddish-brown, and thin tan clay and caliche strips11103
Silt, clayey, tan; drilled easy12115
Silt, clayey, tan, and a thin strip of fine sand10125
Sand, fine to medium, and brown silt5130
Sand, inedium to coarse, and fine gravel; contains one thin clayey silt strip8138
Clay, gray, and thin brown and reddish-tan clay strips11149
Sand, fine1150
Sand, fine to coarse, reddish-brown, and thin clay strips22172
Clay, silty, blue-green, and strips of fine sand8180
Clay, silty, blue-oray12192
Sand, medium to coarse13205
Clay, silty, blue-gray, and tan clay strips10215
Sand, medium to coarse, silty8223
Clay, blue-gray, and strips of tan clay19242
Sand, medium to coarse, and thin tan clay strips8250
Sand, medium to coarse, and fine gravel; contains thin blue-gray clay strips15265
Clay, silty, blue-gray, and strips of tan clay17282
Sand, fine to coarse, and fine gravel18300
Sand, medium to coarse, and fine to medium gravel27327
Silt, brown, and coarse sand and fine gravel strips5332
Gravel, fine, and very coarse sand; contains thin blue-gray clay strips6338
Clay, hard, tan4342
Clay, gray-tan, and strips of brown clay10352
Sand, fine, silty3355
Sand, medium to coarse, and fine gravel3358
Clay, gray, and strips of tan clay35393
Clay, brown, and thin hard strips of fine to medium sand17+410
29-36-2ccb--Sample log of test hole drilled bv Young Drilling Co. for Mobil Oil Co. in NW SW SW sec. 2, T. 29 S., R. 36 W., 40 feet east and 0.14 mile north of SW cor. sec. 2; October 22, 1959; altitude of land surface, 3,045 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil and brown, fine to coarse, silty sand1515
Sand, fine to coarse, silty, brown; contains a little caliche1530
Sand, fine to coarse, silty, brown; contains a little fine gravel1545
Gravel, fine to coarse; contains sand, silt, and caliche1560
Sand, very fine to coarse, silty, limy, light brown3090
Silt, gray and red-brown15105
Silt, tan45150
Silt, sandy, light gray and tan15165
Silt, gray and tan15180
Silt, sandy, dark gray15195
Silt, sandy, gray and brown15210
Silt, gray-brown and brown15225
Silt, sandy, brown65290
Silt, sandy, brown to gray, and fine to coarse sand15+305
29-36-7dcc--Sample log of test hole drilled in SW SW SE sec. 7, T. 29 S., R. 36 W., 10 feet north and 0.4 mile west of SE cor. sec. 7; 1959; altitude of land surface, 2,998 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Sand, fine to coarse, and caliche1010
Sand, very fine to medium, brown; contains gastropod shells1020
Sand, fine, and brown silt1030
Sand, very fine, and brown silt1040
Silt, sandy, limy, brown1050
Silt, tan2070
Sand, very fine, tan1080
Silt, yellow1090
Silt, tan10100
Silt, pink10110
Silt, gray, some limonite stain10120
Silt, sandy, pink10130
Silt, very sandy, gray to brown10140
Sand, very fine to coarse, silty, brown10150
Silt, sandy, tan10160
Sand, fine to coarse, very silty, brown10170
Silt, tan50220
Silt, sandy, brown10230
Silt,tan10240
Sand, fine to coarse, silty20260
Pliocene
Ogallala Formation
Silt, sandy, limy, tan10270
Silt,tan20290
Sand, fine to coarse, silty10300
Silt, sandy, tan20320
Sand, fine to very coarse, and caliche20340
Clay, tan; contains some ironstone10350
Cretaceous
Lower Cretaceous
Kiowa Shale
Sandstone, very fine, dark brown to dark gray20370
Shale, black20+390
29-36-21cdc--Sample log of test hole drilled in SW SE SW sec. 21, T. 29 S., R. 36 W., 0.34 mile east of SW cor. sec. 21; October 12, 1959; altitude of land surface, 2,943 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil33
Sand, silty, brown58
Sand, fine, brown715
Sand, coarse1227
Silt, gray; contains a few mollusk shells633
Sand, fine, gray; and thin, soft gray silt streaks740
Sand, fine to coarse and fine gravel949
Silt, brown-tan958
Silt, clayey, blue-gray159
Silt, gray-tan1372
Silt, clayey, blue-gray; contains small fragments of lignite981
Silt, gray-tan; and tan silt streaks485
Silt, gray-tan590
Silt, clayey, blue; contains small fragments of lignite and mollusk shells696
Sand, coarse, gray399
Silt, clayey, hard, blue; contains small fragments of lignite and mollusk shells8107
Silt, clayey, sticky, blue; contains small fragments of lignite2109
Silt, clayey, blue; contains small fragments of lignite and mollusk shells15124
Sand, blue-gray1125
Silt, clayey, blue; contains small fragments of lignite and mollusk shells20145
Silt, clayey, blue; with white silt strips9154
Sand, fine to coarse, blue and white, and fine gravel6160
Gravel, fine to medium, blue and white10170
Gravel, fine, brown and coarse sand; with thin brown silt strips10180
Sand, medium to coarse, and fine to medium gravel35215
Pliocene
Ogallala Formation
Silt, tan, and fine sand2217
Sand, fine to coarse, and fine gravel; contains a little caliche3220
Sand, fine to coarse, and fine gravel5225
Caliche and brown sandy silt5230
Caliche, soft, sandy13243
Silt, limy, tan27270
Sand, very fine to coarse10280
Sand, very fine to coarse, and caliche10290
Sand, fine to coarse, and brown and gray clay strips10300
Sand, fine to coarse20320
Sand, fine to coarse, and fine to medium gravel; contains rounded fragments of gray and brown sandstone and ironstone20340
Sand, fine to coarse; contains sandstone and ironstone10350
Sand, fine, iron-cemented, red-brown10+360
29-36-23ddd--Sample log of test hole drilled in SE SE SE sec. 23, T. 29 S., R. 36 W., 10 feet north and 10 feet west of SE cor. sec. 23; October 7, 1959; altitude of land surface, 3,023 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, gray1010
Silt, sandy, gray-brown; contains a little caliche1020
Silt, sandy, light-brown, and caliche2040
Sand, fine to coarse, and fine gravel14-54
Silt, brown3690
Silt,tan10100
Silt, sandy, tan12-112
Sand, fine, light-brown8120
Silt, sandy, tan50170
Sand, fine to medium, silty, brown20190
Silt, light-brown30220
Silt, ligbt-brown to gray20240
Silt, sandy, light-brown10250
Sand, fine to coarse, silty, light-brown; contains a little fine gravel20270
Silt, brown20290
Sand, fine to coarse, and fine to medium gravel; contains much silt50340
Pilocene
Ogallala Formation
Silt, sandy, brown; contains caliche10+350
29-36-30aaa--Sample log of test hole drilled in NE NE NE sec. 30, T. 29 S., R. 36 W., 50 feet south and 50 feet west of NE cor. sec. 30; October 14, 1959; altitude of land surface, 3,043 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil; contains reddish-brown sandy silt1010
Sand, fine to medium, and brownish-red silt1020
Sand, very fine to medium, caliche-cemented2040
Clay, silty, tan and gray1050
Sand, fine to medium; contains tan and gray clayey silt1060
Silt, clayey, tan1070
Silt, red-brown, and very fine sand30100
Sand, fine to medium; contains reddish-brown silt10110
Silt, clayey, brownish-tan30140
Silt, clayey, gray; interbedded with tan clayey silt20160
Sand, fine to medium; contains tan clayey silt10170
Silt, clayey, light-gray; interbedded with tan clayey silt10180
Silt, clayey, light-brown; interbedded with gray clayey silt layers and fine sand layers30220
Silt, clayey, dark-brown; interbedded with light-gray, clayey silt layers and a few thin fine sand layers70290
Sand, fine to coarse; contains thin, brown silty clay layers20310
Pliocene
Ogallala Formation
Silt, brown; interbedded with sand and caliche layers90400
Silt, brown; interbedded with medium to coarse quartzose sand and thin caliche strips37437
Clay, brown and gray3+440
29-36-35ccc--Sample log of test hole drilled in SW SW sec. 35, T. 29 S., R. 36 W., SW cor. sec. 35; 1942; altitude of land surface, 2,933 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Soil, fine, sandy, gray-brown11
Silt; contains nodules of caliche45
Silt, soft, dark-gray27
Silt, compact, blocky, grayish-green to greenish-brown310
Sand, fine to coarse, brown1727
Sand, fine to coarse, partially cemented, brown; and fine to medium gravel; contains brown and light buff silt and caliche1340
Sand, coarse to fine, dark-brown343
Silt, compact, buff; contains caliche346
Clay, compact, buff to white and pink; contains silt and a little sand3480
Volcanic ash (?), brittle, partly indurated, white to gray and pink-brown787
Clay, compact, gray-green and brown491
Clay, silty to fine sandy, gray to dark-buff; contains caliche21112
Sand, silt and clay, compact, gray and tan8120
Silt, sandy, pink and gray-green; silty clay10130
Clay, silty to fine sandy, buff; contains clay, fine gravel, and caliche28158
Sand, silt and clay, compact, tan and gray to brown12170
Silt, coarse sandy, soft, buff to gray; contains hard blocky gray-green clay20190
Silt, compact, tan and brown; medium to fine sand10200
Sand, coarse to fine, brown, and tan to white compact silt20220
Gravel, coarse to fine, and buff to white fine sandy to clayey silt; contains caliche20240
Pliocene
Ogallala Formation
Silt, clayey, buff to gray and green-gray; contains sand, gravel and caliche10250
Caliche and gray to buff sandy silt; contains sand and gravel10260
Sand, medium, and light-buff to tan and gray-green silt; contains caliche30290
Silt, sandy, soft, light buff to gray-green and tan; contains caliche10300
Clay, compact, blocky, green-brown11311
Sand, medium to fine, partially cemented15326
Clay, compact, blocky, dark tan24350
Silt, tan; contains fine gravel and fine to coarse sand10360
Sand, coarse to medium, gray-brown; contains light tan silt61421
Sand, very fine to very coarse, partially cemented, and very fine to fine gravel, contains fragments of ironstone and sandstone91512
Triassic (?)
Upper Triassic (?)
Dockum (?) Group
Shale, silty, brick-red8+520
29-37-16ddd--Sample log of test hole drilled in SE SE sec. 16, T. 29 S., R. 37 W., near SE cor.; October 14, 1959; altitude of land surface, 3,038 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil33
Silt, sandy, brown69
Sand, fine, brown415
Caliche and brown, fine sand621
Sand, fine to coarse, brown, and caliche streaks627
Silt, tan, and caliche streaks229
Sand, fine, brown, and caliche streaks736
Silt, gray-tan1753
Sand, fine, brown558
Silt, tan260
Sand, fine to coarse; contains tan, and tan silt3090
Silt, sandy, gray-tan to brown30120
Sand, fine to coarse, brown10130
Silt, sandy, tan to light gray20150
Sand, fine to medium, tan10160
Silt, sandy, tan to brown20180
Silt, sandy, brown to gray, and caliche10190
Silt, sandy, limy, gray to tan20210
Sand, very fine to very coarse, brown10220
Silt, sandy, gray, and fine to coarse sand; contains caliche10230
Caliche, very soft; contains coarse sand10240
Sand, very fine to very coarse, brown; contains a little very fine gravel20260
Silt, tan to gray; contains much caliche10270
Sand, medium to coarse, brown, and fine to medium gravel40310
Pliocene
Ogallala Formation
Silt, tan, and caliche20330
Clay, silty, yellow, tan, gray, and brown; contains fine to coarse sand30+360
29-38-21bcb--Sample log of test hole drilled in NW SW NW sec. 21, T. 29 S., R. 38 W., 0.26 mile south and 35 feet east of NW cor. sec. 21; May 17, 1960; altitude of land surface, 3,126 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, brownish-gray1212
Silt, sandy, brown820
Clay, sandy, buff-tan1030
Clay, buff535
Sand, fine to medium, light-brown439
Silt, buff-tan; with layers of buff-tan clay1150
Silt, sandy, buff-tan; with layers of buff-tan clay1060
Sand, fine to very coarse, light-brown; and fine gravel1070
Silt, sandy, tan1080
Sand, fine to medium, and thin layers of tan sandy silt20100
Clay, tan4104
Sand, fine to coarse, light-brown4108
Clay, tan2110
Sand, fine to coarse, light-brown25135
Clay, tan5140
Clay, tan; with layers of tan sandy silt12152
Sand, fine to coarse, light-brown11163
Silt, sandy, tan3166
Sand, fine, light-brown4170
Silt, sandy, tan10180
Sand, fine to very coarse, light-brown10190
Sand, very fine, silty, tan30220
Silt, very fine to medium, sandy15235
Sand, fine, light-brown5240
Sand, very fine, silty, tan; with caliche cement20260
Sand, fine to coarse, and tan clay10270
Sand, fine to medium, and tan hard clay20290
Clay, tan10300
Sand, fine to coarse; with thin clay layers10310
Sand, coarse to fine, light-brown10320
Pliocene
Ogallala Formation
Clay, buff, and thin beds of fine to medium sand10330
Sand, fine to coarse; with thin beds of tan clay10340
Clay, tan, and fine silty sand cemented with caliche10350
Sand, fine to medium; with thin beds of buff-tan clay20370
Sand, fine; with beds of limonite-brown silty clay30400
Clay, silty, buff; with thin beds of fine sand50450
Clay, silty, buff; with fine caliche-cemented sand10460
Clay, silty, buff; with fine sand30490
Silt, clayey, buff; with fine sand10+500
29-38-23cc--Sample log of test hole drilled in SW SW sec. 23, T. 29 S., R. 38 W., 0.08 mile north and 35 feet east of SW cor. sec. 23; May 16, 1960; altitude of land surface, 3,055 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil22
Sand, fine, gray-brown810
Silt, sandy, brown, and brown fine sand streaks1727
Silt, brown-tan330
Silt, hard, brown-tan1747
Silt, sandy, brown-tan350
Sand, fine to very coarse, loose, brown; with thin, sandy silt streaks2575
Silt, hard, brown-tan782
Silt, brown-tan; with thin very fine sand streaks890
Sand, fine to medium; with brown very fine sand streaks999
Silt, brown-tan; brown sandy silt and fine sand streaks15114
Sand, fine, brown; with thin silt streaks11125
Sand, fine, brown, and silt streaks5130
Sand, fine, brown; with thin silt streaks15145
Sand, fine to very coarse; with thin silt streaks7152
Sand, fine to medium, brown; with silt and sandy silt streaks55207
Sand, fine to very coarse, brown13220
Sand, coarse, brown; with a little fine to medium gravel16236
Sand, coarse, brown; with fine to medium gravel and thin streaks of sandy caliche12248
Pliocene
Ogallala Formation
Sand, fine to coarse, brown34282
Silt, sandy, pink; caliche and fine sand streaks6288
Silt, brown, and sandy silt17305
Sand, fine to coarse4309
Silt, hard, clayey, brown and blue; with thin streaks of fine sand29338
Sand, fine, loose, brown; with thin brown clay and sandy clay layers27365
Sand, fine to medium, brown; with very few thin clay streaks11376
Sand, medium, brown; with a few very thin clay streaks39415
Sand, medium to coarse, brown; with brown elay streaks10425
Sand, coarse, loose, and fine gravel; contains a little ironstone7432
Sand, coarse, loose, and brown clays streaks4436
Clay, hard, brown4+440
29-38-24ddd--Sample log of test hole drilled in SE SE SE sec. 24, T. 29 S., R. 38 W., SE cor sec. 24; October 20, 1959; altitude of land surface, 3,114 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Silt, gray and brown1010
Silt, brown, fine to coarse sand and calicbe1020
Silt, sandy, brown3050
Sand, fine, silty, red-brown1060
Silt, sandy, limy, tan1070
Sand, fine to coarse, and brown silt30100
Silt, limy, tan18118
Sand, fine to medium2120
Silt, brown, and fine to medium sand10130
Sand, fine to coarse, tan, limy silt and caliche20150
Silt, sandy, brown10160
Sand, fine to coarse10170
Sand, coarse, and clay streaks20190
Sand, fine to coarse, and brown silt20210
Silt, brown20230
Silt, brown-tan and gray-brown10240
Silt, gray-brown10250
Clay, silty, blue-gray10260
Silt, gray-brown and tan10270
Silt, gray-brown, tan, and gray10280
Silt, brown and dark-gray102,90
Silt, dark-gray and tan10300
Sand, fine to very coarse; with a little fine to medium gravel and tan silt30330
Pliocene
Ogallala Formation
Clay, silty, gray-brown and tan10340
Clay, silty, brown; with a little gray clay and some sand10350
Clay, brown and blue; with coarse sand strips30380
Clay, sandy, pink, and fine sand20+400
29-38-33bbb--Sample log of test hole drilled in NW NW NW sec. 33, T. 29 S., R. 38 W., NW cor. sec. 33; 1942; altitude of land surface, 3,115 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, sandy, gray22
Silt, sandy, gray to tan; some caliche cement1113
Silt, clayey, tan518
Silt, clayey, tan and gray; molluscan fauna826
Silt, clayey, tan430
Sand, fine to coarse; with gravel and light-gray silt1040
Silt, sandy; with caliche cement343
Gravel, fine to medium, and coarse to medium sand548
Silt, clayey, tan1260
Silt, sandy, tan-gray868
Sand, very coarse to medium; with fine to medium gravel; contains buff-tan silt1785
Silt, sandy, tan15100
Silt, sandy, tan-gray; with caliche cement10110
Silt, clayey, tan30140
Silt, tan12152
Gravel, fine to medium, and coarse to fine sand22174
Silt, sandy, tan-white; with caliche cement6180
Silt, sandy, and tan clay; with some thin sand beds40220
Sand, fine to coarse; contains brown clay and thin gray clay streaks24238
Clay, hard, silty, tan, interbedded with gray clay; contains thin layers of fine sand22260
Clay, soft, silty, gray and tan; contains thin, hard layers of fine sand20280
Clay, silty, brown and gray; contains thin layers of fine sand10290
Silt, sandy, brown, interbedded with thin, gray, hard clay layers; containing thin layers of brown fine silty sand17307
Sand, very fine to medium, silty, brown7314
Silt, clayey, tan8322
Sand, medium to coarse, silty, brown16338
Clay, hard, silty, brown4342
Sand, medium to coarse, caliche cement5347
Silt, soft, clayey7354
Clay, hard, silty3357
Silt, hard, clayey, gray3+360
30-35-34cc--Sample log of test hole drilled in SW SW sec. 34, T. 30 S., R. 35 W., 30 feet north and 140 feet east of SW cor. sec. 34; May 1960; altitude of land surface, 2,878 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Sand, fine, silty, brown22
Sand, fine to medium, silty, brown46
Sand, fine to medium39
Sand, medium to very coarse, and fine to medium gravel2635
Sand, coarse to very coarse, and fine to medium gravel; contains thin caliche layers1146
Silt, clayey, brown652
Silt, clayey, tan; interbedded with gray silty clay860
Sand, fine to medium; contains thin brown clay layers464
Sand, medium to very coarse, and fine gravel670
Sand, coarse to very coarse, and fine to medium gravel2090
Clay, hard, tan; interbedded with brown sandy clay393
Sand, fine to medium, silty, tan396
Silt, sandy, tan; contains thin fine sand layers5101
Sand, fine to medium, silty, tan7108
Clay, hard, brown2110
Sand, very fine to medium; contains thin brown sandy clay layers7117
Sand, medium to coarse, and fine gravel18135
Sand, medium to coarse, and fine gravel; contains thin tan silt and caliche layers5140
Silt, clayey, tan, and thin gray silty clay layers11151
Sand, fine to coarse, and fine gravel2153
Clay, hard, silty, brown2155
Sand, medium to coarse, and fine to medium gravel9164
Clay, hard, silty, brown2166
Sand, medium to coarse, and fine to medium gra,,el3169
Clay, hard, silty, brown2171
Sand, medium to coarse, and fine to medium gravel3174
Clay, hard, silty, brown2176
Sand, very coarse to medium, and fine to medium gravel10186
Pliocene
Ogallala Formation
Silt, clayey, tan, brown; contains thin fine sand strips29215
Sand, fine to medium; contains thin tan sandy clay layers23238
Silt, sandy, brown, and thin fine sand layers7245
Sand, fine to medium; contains thin tan sandy clay layers16261
Silt, hard, brown, interbedded with tan-gray clay10271
Sand, cdarse to medium, and fine gravel11282
Silt, sandy, tan7289
Silt, clayey, brown5294
Sand, fine to very fine, tan3297
Silt, sandy, with thin layers of soft brown clay7304
Sand, fine to medium, silty, reddish-tan3307
Silt, sandy, tan3310
Clay, hard, silty10+320
30-36-24ccc--Sample log of test hole drilled in SW SW sec. 24, T. 30 S., R. 36 W., 200 feet north and 50 feet east of SW cor. sec. 24; November 1959; altitude of land surface, 2,902 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Sand and fine gravel1515
Clay, silty, brown1328
Sand, coarse, and fine gravel1139
Clay, brown342
Sand, coarse, and fine gravel1456
Clay, silt, fine sand and caliche strips1470
Clay, silty, brown1888
Sand, medium to coarse12100
Sand, coarse10110
Sand, coarse, and fine gravel8118
Clay, sandy, gray and brown; contains sand layers22140
Sand, fine to medium, silty, brown10150
Sand, coarse10160
Sand, coarse, and fine gravel30190
Sand, fine6196
Sand, coarse, and gravel12208
Clay, brown2210
Sand, coarse, and gravel18228
Pliocene
Ogallala Formation
Clay, brown12240
Clay, brown; contains a few fine sand strips10250
Sand, medium to coarse10260
Clay, caliche and fine sand strips; contains red weathered sandstone fragments40+300
30-36-35aaa--Sample log of test hole drilled in NE NE sec. 35, T. 30 S., R. 35 W., near NE cor. sec. 35; 1942; altitude of land surface, 2,897 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Road fill55
Silt, fine sandy to clayey, compact, dark-buff38
Sand, fine to coarse and fine gravel311
Silt, fine sandy, dark-gray to black314
Silt, clayey, brownish-gray519
Sand, fine to coarse, and grayish-brown sandy clay; containing fine gravel and caliche3150
Gravel, fine to coarse, brown; containing clay and nodules of caliche454
Clay, compact, yellow-buff to gray and tan; containing fine sand16+70
30-36-35ddd--Sample log of test hole drilled in SE SE sec. 35, T. 30 S., R. 36 W., near SE cor. sec. 35; 1942; altitude of land surface, 2,954 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Soil, sandy, gray-brown1.51.5
Silt, sandy, red-brown; contains caliche5.57
Silt, sandy to clayey, light gray-green, and caliche310
Silt and clay, compact, sandy, gray-green and brown; contains caliche1626
Clay, compact, buff-pink228
Silt, red, and fine to coarse sand; contains buff-pink compact clay230
Silt, sandy to clayey, buff-pink; contains caliche1444
Silt, compact, gray and buff; contains gravel and caliche650
Gravel, fine, slightly cemented, and gray-green to yellow and brown1868
Sand and gravel, cemented with caliche270
Gravel, fine, and coarse sand; contains gray-buff to tan silt and caliche2090
Clay, compact, yellow-gray and tan20110
Clay and silt; tan and blue; contains caliche16126
Silt, compact ' gray-brown and tan-green to blue; contains caliche34160
Sand, coarse; contains clayey silt10170
Sand, coarse, and fine gravel20190
Pliocene
Ogallala Formation
Silt, sandy, gray and brown; contains some sand10200
Sand, coarse, and some fine gravel; contains silt and clay20220
Silt, compact, clayey, tan and blue; contains caliche30250
Silt, compact, varicolored; contains clay and weathered sandstone fragments20+270
30-37-2cd2--Sample log of test hole drilled by Juel Water Well Drilling Co. for Lawrence Stein in SE SW sec. 2, T. 30 S., R. 37 W., 300 feet north and 100 feet west of south 1/4-cor. sec. 2; May 1, 1959; altitude of land surface, 3,089 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
No log100100
Sand, fine to coarse; contains a little tan silt and caliche10110
Silt, tan20130
Sand, very fine, silty, tan10140
Sand, very fine, silty, brown20160
Caliche, soft, and fine sand10170
Sand, very fine to fine, silty, brown10180
Silt, sandy, gray-green, brown and yellow; contains a little caliche10190
Sand, very fine to very coarse; contains much gray and brown silt10200
Silt, sandy, clayey, gray-green10210
Lignite10220
Sand, fine, silty, gray-green; contains a little gray-green clay10230
Silt, clayey, sandy, brown10240
Silt, limy, sandy, tan20260
Sand, fine to very coarse; contains fine gravel and brown silt10270
Caliche, sand and silt, tan20290
Sand, fine to very coarse, and brown silt20310
Pliocene
Ogallala Formation
Silt, sandy, limy, brown-tan10320
Silt, sandy, brown, and caliche20340
Silt, clayey, brown20360
Silt, sandy, red-brown10370
Silt, sandy, tan, green and red-brown10380
Sand, fine to very coarse, and brown silt10390
Silt, sandy, red-brown, green and tan10400
Sand, fine to very coarse, and fine gravel; contains predominantly quartz grains10410
Sand, very fine, hard, brown, white and red; contains ironstone and limestone fragments10420
Silt, very sandy, red-brown10430
Silt, sandy, red-brown to brown10440
Silt, brown, and white to pink clay10450
Sand, very fine, silty, tan, green, and yellow to dark-brown10460
Silt, clayey, tan20480
Silt, sandy, tan, red-brown, gray-brown, and green20500
Sand, very fine, limy10510
Silt, sandy, light-brown; contains a little caliche10520
Silt, gray-green, tan, and brown10530
Silt, clayey, pinkish-tan20550
Triassic
Upper Triassic
Dockum Group
Siltstone, red and tan20+570
30-37-3bbb--Sample log of test hole drilled in NW NW NW sec. 3, T. 30 S., R. 37 W., in NW cor. sec. 3; 1942; altitude of land surface, 3,074 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Soil, sandy, black33
Silt, fine sandy, gray-brown; contains caliche36
Sand and gray-brown to tan silt; contains caliche1319
Sand, medium to fine, partially consolidated625
Silt, compact, tan and white; contains caliche1540
Silt, sandy, light-tan to tan; contains caliche1050
Silt, clayey, compact, tan; contains fine sand and caliche70120
Silt, clayey, compact, buff18138
Gravel, coarse to medium5143
Silt, sandy, and gravel13156
Gravel, medium to fine, and coarse to fine sand; contains pink and buff, sandy, soft silt27183
Silt, soft, sandy, gray2185
Gravel, coarse to fine, and coarse to medium sand; contains caliche13198
Silt, soft, sandy, buff to gray; contains sand and gravel12210
Silt, compact, clayey to sandy, buff15225
Sand, coarse to fine; contains coarse gravel and buff, sandy, compact silt25250
Gravel and coarse to fine sand; contains a little caliche and silt60310
Pliocene
Ogallala Formation
Silt, sandy, tan and gray; contains a little gravel10320
Gravel, coarse, and tan to gray sandy silt10330
Silt, sandy, tan and gray; contains a little coarse gravel20350
Sand, fine, and white and light-gray to buff sandy silt; contains caliche18368
Sand, fine, partially indurated, yellow to brown; contains gray-green and blue-gray silt22390
Clay, varicolored, and yellow to red slightly indurated sand10400
Sand, fine, slightly indurated, yellow; contains fine sandy silt and varicolored clay10410
Silt, light blue-gray and brick-red; sand and clay; contains ironstone10420
Sand, fine, slightly indurated, white to yellow and brown; contains varicolored clay100520
Triassic
Upper Triassic
Dockum (?) Group
Shale, clayey, brick-red10+530
30-37-3da--Sample log of test hole drilled by Juel Water Well Drilling Co. for Lawrence Steen in NE SE sec. 3, T. 30 S., R. 37 W., 0.35 mile north and 300 feet west of SE cor. sec. 3; May 1, 1959; altitude of land surface, 3,101 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
No log100100
Silt, sandy, tan10110
Sand, fine to coarse10120
Silt, brown to tan; contains caliche20140
Silt, sandy, tan; contains a little caliche50190
Silt, sandy, tan; contains abundant caliche10200
Caliche, soft, white10210
Sand, very fine to fine, silty, light-green10220
Silt, sandy, gray10230
Silt, clayey, blue-gray10240
Silt, blue-gray10250
Silt, sandy, gray10260
Sand, very fine to fine, silty, gray-green15275
Sand, very fine to coarse, silty, limy, light red-brown15290
Sand, very coarse, and fine to medium gravel10300
Silt, brown, and caliche15315
Sand, fine to coarse; contains streaks of brown silt25340
Pliocene
Ogallala Formation
Silt, sandy, red-brown; contains streaks of gray clay and fine sand10360
Silt, sandy, red25385
Silt, reddish-tan, and caliche15400
Sand, fine to medium, silty, limy, reddish-tan30430
Silt, sandy, red-brown, green and yellow40470
Sand, very fine to coarse, predominently round fragments of brown very fine sandstone; contains thin streaks of pink and green silty clay80550
Triassic
Upper Triassic
Dockum Group
Siltstone, sandy, red and tan; with a trace of gypsum20+570
30-37-23db--Sample log of test hole drilled in NW SE sec. 23, T. 30 S., R. 37 W., 100 feet south and 400 feet east of center sec. 23; May 12, 1960; altitude of land surface, 2,971 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Road fill33
Sand, fine, brown1215
Silt, sandy, brown318
Caliche and sandy silt119
Sand, fine, brown322
Silt, sandy, brown, and silt streaks830
Silt, soft, gray-brown939
Sand, fine to medium, loose, white to tan1150
Sand, medium to coarse, loose, tan-brown1565
Sand, coarse, loose, tan-brown, and some fine gravel368
Silt, sandy, brown270
Sand, fine, brown-red; contains thin sandy silt streaks979
Sand, coarse, gray281
Silt, hard, brown-tan1293
Silt, gray and tan streaks12105
Sand, coarse, red-brown3108
Silt, brown-tan4112
Silt, sandy, brown-tan; contains thin fine sand streaks7119
Silt, moderately hard, tan-brown19138
Sand, fine, brown2140
Silt, tan-brown8148
Sand, fine, brown3151
Silt, sandy, brown4155
Sand, fine to medium, brown8163
Sand, fine to medium, brown, and sandy silt streaks; contains some clay streaks6169
Silt, hard, clayey, brown; contains tan silt streaks9178
Sand, fine to medium, loose, brown6184
Silt, sandy, brown2186
Sand, fine to medium, brown3189
Sand, medium to coarse, brown; contains a little very fine gravel17206
Silt, soft, interbedded tan and brown layers; contains a few sandy silt streaks16222
Silt, soft, tan, and hard brown streaks; contains a little blue clay12234
Sand, fine to coarse, brown-red5239
Pliocene
Ogallala Formation
Silt, hard, brown and tan; contains thin brown fine sand streaks9248
Silt, very hard, brown4252
Silt, brown, and fine sand streaks11273
Sand, fine, brown3276
Silt, sandy silt and thin fine sand streaks9285
Sand, tan-orange2287
Silt, hard, clayey, tan-brown9296
Sand, red1297
Silt, hard, clayey, tan-brown3+300
30-37-25ac--Sample log of test hole drilled for Saturn Oil and Gas Co. et al. in SW NE sec. 25, T. 30 S., R. 37 W.; April 25, 1961; altitude of land surface, 3,005 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Silt, sandy, tan to brown1313
Caliche, hard417
Silt, sandy, brown; with a little clay and fine gravel2744
Caliche, very hard448
Silt, brown755
Sand, fine to coarse, silty; with fine to medium gravel1671
Caliche, soft273
Silt, sandy, brown57130
Sand, fine to coarse, and fine gravel22152
Caliche, hard2154
Silt, sandy, brown21175
Sand, fine to coarse, and fine gravel6181
Caliche2183
Sand, fine to coarse, silty15198
Caliche4202
Sand, fine, silty, brown48250
Clay, silty, brown20270
Sand, fine, silty, brown13283
Sand, fine to medium22305
Sand, fine to coarse; with little fine gravel26331
Clay, sandy, red5336
Sand, fine to coarse; with a little fine gravel14350
Pliocene
Ogallala Formation
Clay, sandy, red6356
Clay, tan; interbedded with brown silt, and sand to fine gravel29385
Sand, fine to coarse, silty, brown39424
Clay, brown, silty6430
Sand, fine, lime-cemented, tan13143
Clay, silty, red4447
Sand, fine, limonite-yellow17464
Sand, very fine to fine, moderately hard, silty, limonite-yellow; contains thin red beds50514
Permian
Cimarronian
Undifferentiated red beds
Sandstone, very fine, hard, silty, red; with streaks of red shale and gypsum beds286+800
30-37-26db2--Sample log of test hole drilled in NW SE sec. 26, T. 30 S., R. 37 W., 0.28 mile north and 0.35 mile west of SE cor. sec. 26; May 11, 1960; altitude of land surface, 3,077 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil33
Silt, tan-brown36
Sand, fine, silty, brown28
Silt, tan-gray311
Sand, fine, silty, brown415
Silt, tan, and caliche217
Silt, tan-brown522
Sand, fine; contains silt and caliche in thin streaks527
Silt, sandy, tan, and caliche1845
Silt, brown and fine silty sand2772
Sand, fine, brown274
Silt, brown579
Caliche, sandy; brown silt and fine sand in thin streaks1493
Sand, fine to coarse, and fine gravel; cemented with caliche598
Sand, coarse, loose, gray-red, and fine gravel11109
Silt, brown, and caliche; contains thin, hard coarse sand streaks6115
Silt, hard, brown-tan17132
Sand, fine to medium, brown12144
Silt, tan2146
Sand, fine to medium, brown11157
Caliche, hard1158
Sand, fine to medium, brown2160
Sand, medium to coarse, brown8168
Sand, very fine, brown; interbedded with thin tan silt strips17185
Sand, medium to coarse, loose, broken30215
Sand, coarse, loose, brown; contains a little fine gravel17232
Sand, hard, coarse, brown9241
Sand, fine to medium, hard, brown; contains very thin tan silt and caliche streaks9250
Silt, hard, brown12262
Sand, fine, hard, brown; interbedded with layers of brown silt11273
Sand, fine to medium, brown7280
Silt, brown, and fine sand streaks3283
Sand, fine, brown, and thin silt streaks9292
Sand, fine, brown6298
Silt, brown and tan; with a few thin sand layers11309
Sand, fine to medium, brown; with an occasional brown silt layer11320
Sand, medium to coarse, brown; with a few silt streaks22342
Silt, brown, and fine sand streaks10352
Sand, medium to coarse, loose, brown8360
Sand, coarse, loose, brown, and some fine gravel14374
Pliocene
Ogallala Formation
Silt, hard; contains a little ironstone4378
Sand, coarse, brown10388
Silt, hard, brown and tan; contains small sandstone fragments12+400
30-37-30dd--Sample log of test hole drilled in SE SE sec. 30, T. 30 S., R. 37 W., 85 feet north and 25 feet west of SE cor. sec. 30; May 12, 1960; altitude of land surface, 3,067 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Topsoil22
Sand, fine to medium, loose, brown1214
Silt, tan, and caliche216
Sand, coarse, loose, and fine to medium gravel622
Caliche, sandy, hard, pink3456
Silt, hard, brown662
Sand, coarse365
Silt, hard, brown267
Sand, coarse, hard, lime-cemented, gray-brown; fine to coarse gravel, and thin caliche streaks875
Sand, coarse, loose, gray-brown1085
Lignite489
Sand, fine, brown; with thin brown silt and sandy silt streaks16105
Sand, coarse, brown, and caliche streaks11116
Sand, coarse, loose, brown; contains a little fine gravel21137
Caliche and sand2139
Sand, coarse, loose, red-brown18157
Sand, fine to coarse, hard, red-brown; contains a little caliche13170
Sand, loose, brown-red14184
Clay, hard, sticky, brown5189
Sand, coarse; with silt and sandy silt streaks13202
Sand, fine, hard, brown2204
Silt, hard, brown; with thin fine sand streaks20224
Sand, fine, hard, brown; with thin silt streaks8232
Sand, fine to coarse, brown; with silt streaks5237
Sand, fine to coarse, silty, hard, brown17254
Sand, fine to medium, loose, brown5259
Sand, fine to medium, brown; with pink-brown sandy silt streaks9263
Silt, soft, brown8276
Sand, coarse, loose, brown, and very fine gravel3279
Silt, soft, brown4233
Sand, coarse, loose, brown, and very fine gravel12295
Sand, coarse, loose, brown; and fine gravel9304
Silt, brown2306
Sand, coarse, loose, brown; with a little fine gravel6312
Sand, coarse; with thin brown silt streaks3315
Sand and gravel, loose4319
Pliocene
Ogallala Formation
Sand, tan-orange, and caliche1320
Sand, silt, and clay in thin hard streaks10330
Sand, very hard, and hard clay4+334
30-37-32aa--Sample log of test hole drilled by Garvey Drilling Co. for Anadarko Production et al. in NE NE sec. 32, T. 30 S., R. 37 W., 0.12 mile south and 0.12 mile west of NE cor. sec. 32; May 6, 1961; altitude of land surface, 3,071 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Silt, clayey, tan to red-brown; contains a little caliche and fine sand5050
Silt, sand, tan, and caliche; contains a few fine sand streaks1262
Sand, fine to medium, silty, brown1173
Sand, coarse, brown2295
Sand, medium to coarse, and fine to medium gravel; contains a few caliche and silt streaks10105
Sand, medium to coarse, silty, and fine to medium gravel50155
Gravel, fine to coarse, and coarse sand70225
Clay, brown8233
Gravel, coarse to fine, and coarse sand7240
Silt, tan; with gravel and sand streaks45285
Clay, silty, gray8293
Silt, tan; with gravel and sand streaks9302
Gravel, fine to medium, and coarse sand; with tan, silty clay layers18320
Sand, fine to medium, silty, and caliche25345
Pliocene
Ogallala Formation
Clay, hard, red4349
Sand, fine, cemented, tan4353
Clay, gray and tan7360
Sand, hard, silty, tan27387
Clay, hard, red4391
Sand, fine to coarse; contains a little fine gravel7398
Clay, hard, red2400
Silt, hard, tan, and gray sandy clay; with red clay streaks62462
Triassic
Upper Triassic
Dockum Group
Sandstone, fine, moderately hard, yellow, gray and white; interbedded with yellow, gray, and white sandy siltstone45507
Siltstone, hard, sandy, tan to red; with very hard fine sandstone streaks33540
Permian
Cimarronian
Big Basin Formation
Sandstone, very hard, silty, dark-red; with a few soft streaks65+605
30-38-10cb--Sample log of test hole drilled by Rav Stevenson for Elmer Hennigh in NW SW sec. 16, T. 30 S., R. 38 W., 300 feet south and 0.2 mile east of W 1/4 cor. sec. 10; December 1958; altitude of land surface, 3,149 feet estimated. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, sandy, brown2828
Clay, tight, brown1038
Sand, medium to coarse745
Clay, tight, and caliche2570
Sand, medium to coarse575
Clay, brown1590
Clay, silty, and caliche strips20110
Sand, fine, brown10120
Clay, tan-brown, and calicbe15135
Sand, fine15150
Sand, coarse, and gravel15165
Clay, fine; brown sand15180
Sand, coarse, and gravel30210
Sand; few clay strips78288
Gravel12300
Clay and sand strips10310
Sand, coarse, and gravel; some thin clay strips25335
Pliocene
Ogallala Formation
Clay, brown, and sand strips20345
Clay, caliche and fine sand strips15360
Silt, clay and fine, brown sand15375
Clay, gray; contains sandstone fragments15+390
30-38-11ba--Sample log of test hole drilled by Ray Stevenson for Marion Hennigh in NE NW sec. 11, T. 30 S., R. 38 W., 0.1 mile south and 0.3 mile east of NW cor. sec. 11; 1958; altitude of land surface, 3,135 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, brown, and fine sand1212
Clay, silt, fine sand and caliche, tan1830
Sand, fine, silty, brown; some caliche1545
Clay, silty, brown1560
Silt, sandy, brown-tan1878
Clay, silty, brown987
Clay, fine sand and caliche20107
Sand, very fine, silty, brown17124
Clay, silty, brown14138
Sand, fine to medium, brown7145
Clay, brown, and caliche strips31176
Sand, fine to medium, gray-brown20196
Sand, medium to coarse, brown26222
Sand, coarse, and caliche5227
Sand, fine to medium; few clay strips26253
Sand, fine to medium, brown20273
Clay3276
Sand and fine gravel12288
Clay, fine sand and caliche12300
Sand, coarse22322
Sand and fine gravel8330
Clay, caliche and fine gravel strips14344
Pliocene
Ogallala Formation
Clay, hard, brown20364
Sand, fine, silty and clay12376
Sand, very fine, pink-brown14390
Clay, tan and white; contains weathered sandstone fragments15+405
30-38-11bc1--Sample log of test hole drilled by Ray Stevenson for Marion Hennigh in SW NW sec. 11, T. 30 S., R. 38 W.. 40 feet north and 0.2 mile east of W 1/4 cor. sec. 11; altitude of land surface, 3,138 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Sand, fine, silty, brown1212
Clay, tan, and caliche strips820
Sand, fine, silty, brown2545
Clay, caliche and fine sand strips4590
Sand, very fine, silt and caliche strips45135
Clay, brown, and caliche18153
Sand, coarse, and fine gravel9162
Clay, sandy, brown6168
Sand, coarse, and fine gravel34202
Clay, silty, brown6208
Clay, silty, gray, and fine sand10218
Clay, hard, brown9229
Sand, fine, brown18247
Clay, silty, brown10257
Sand, silty, brown13270
Sand, medium to very coarse, and fine to medium gravel23298
Clay, sandy7305
Sand, coarse, and silty clay strips5310
Sand, medium to very coarse, and fine to medium gravel20330
Pliocene
Ogallala Formation
Clay, hard, brown15345
Clay, fine sand and caliche strips13358
Clay, hard, gray, and sandstone chips4362
Clay, gray; siltstone; and fine, brown sand strips23390
Sand, fine, tan; some clay15405
Clay, gray; some fine sand15420
Sand, fine, silt and clay strips35455
Sand, fine, and clay5+460
30-38-19ddd--Sample log of test hole drilled in SE SE sec. 19, T. 30 S., R~ 38 W., 90 feet north and 15 feet west of SE cor. sec. 19; October 23, 1959; altitude of land surface, 3,146 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Silt, gray1010
Silt, sandy, tan1020
Silt, sandy; cemented with white-tan caliche; contains fine quartz grains1535
Clay, silty, brown-tan540
Silt, sandy; cemented with white-tan caliche; contains fine quartz grains1050
Silt, sandy; cemented with white-tan caliche; contains coarse quartz grains1060
Sand,fine to coarse, light-brown1070
Sand, coarse, and fine gravel38108
Silt, sandy, brown22130
Sand, coarse, and fine gravel28158
Silt, brown4162
Sand, medium to coarse; with brown silt8170
Sand, fine to very coarse, and fine gravel16186
Silt, sandy, brown; thin silt and caliche strips14200
Silt, and brown, fine to medium sand10210
Silt, sand, and caliche strips, brown10220
Silt and fine sand; with caliche strips12232
Sand, medium to coarse20252
Clay, silty, brown-tan28280
Sand, coarse, and fine gravel20300
Sand, very coarse, and fine gravel30330
Sand, medium to coarse, and fine gravel16366
Pliocene
Ogallala Formation
Clay, hard, brown-gray; contains weathered ironstone fragments14+380
30-38-30ab1--Sample log of test hole drilled in NW NE sec. 30, T. 30 S., R. 38 W., 0.17 mile South and 0.32 mile west of NE cor. sec. 30; May 1960; altitude of land surface, 3,153 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene
Clay, tan; and topsoil1111
Clay, caliche, and fine sand, tan920
Clay, brown; fine sand, silt, and caliche strips3757
Sand, fine, and caliche663
Sand, coarse, brown; some fine gravel1073
Clay, brown; and sandy clay strips1083
Sand, medium, and clay strips790
Sand, medium to coarse13103
Clay, brown; brown coarse sand strips7110
Sand, fine, brown; clay strips14124
Sand, coarse, brown; some fine gravel12136
Sand, coarse, and pea gravel28164
Clay, brown4168
Sand, coarse10178
Clay, tan6184
Sand, coarse, and gravel91275
Clay, broivn2277
Sand, coarse, and fine gravel53330
Sand, fine to medium27357
Pliocene
Ogallala Formation
Clay and strips of medium sand12369
Clay, hard, varicolored; contains weathered fragments of sandstone15384
Sand, fine, brown8392
Sandstone, red3395
Sandstone, yellow; drilled easy5+400
30-38-32ddd--Sample log of test hole drilled in SE SE sec. 32, T. 30 S., R. 38 W.; 1942; altitude of land surface, 3,173 feet. Thickness,
feet
Depth,
feet
Neogene
Undifferentiated Pleistocene (?)
Silt, brown and gray; contains caliche33
Silt, sandy, tan710
Silt, sandy, tan; contains medium sand818
Silt, very sandy, tan to gray; with caliche1230
Silt, sandy, buff-tan; sand fraction is fine to coarse1040
Silt, sandy, buff-tan; some caliche-cemented layers5496
Silt, sandy, red-buff; with caliche cement17113
Silt, sandy, brown; some caliche cement17130
Sand, coarse, and fine gravel70210
Silt, sandy, white-tan; with caliche cement25235
Sand, coarse, and fine gravel5240
Sand, coarse, and medium gravel10250
Sand, coarse, and fine gravel10260
Sand, coarse, and medium gravel12272
Clay, silty, gray11283
Silt, sandy, reddish-tan7290
Silt, very sandy, tan10300
Sand, coarse, and fine gravel10310
Sand, medium to coarse, and fine gravel10320
Sand, coarse, and medium gravel10330
Sand, coarse, and fine gravel; with some caliche strips10340
Sand, very coarse10350
Sand, coarse, and fine gravel40390
Gravel, medium, and very coarse sand10400
Sand, coarse; and fine gravel20420
Sand, coarse; some silt strips16436
Pliocene
Ogallala Formation
Clay and silt, brown-tan; contains sandstone chips14450
Clay, blue-gray10460
Clay, caliche and silt strips10470
Clay, tan silt and very fine sand strips30500
Clay, yellow and gray; contains caliche and ironstone30530
Clay, varicolored; containing yellow sandstone and ironstone fragments10540
Triassic
Upper Triassic
Dockum Group
Siltstone, red20+560

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Kansas Geological Survey, Geology
Placed on web July 30, 2007; originally published December 1964.
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