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Table of Contents

Abstract

Introduction

Geography

Physiography

Geology

Geologic History

Ground Water

Records of Typical Wells

Logs of Test Holes

References

Plates

Logs of Test Holes and Wells, Page 3 of 8

18-13-34cc--Sample log of test hole at the SW cor. sec. 34, T. 18, S., R. 13 W., Barton County; drilled, 1943. Surface altitude, 1,899.8 feet.			Thickness, feet	Depth, feet
		Soil, gray-brown	2	2
QUATERNARY--Pleistocene
	Sanborn formation
		Silt, clayey, light to dark-gray and yellow-tan	10	12
		Silt, sandy, white, brown, and buff; contains caliche nodules	38	50
		Silt, yellow; contains hematite pebbles	5	55
CRETACEOUS
	Dakota formation (Gulfian)
		Clay, blue-gray; contains some yellow to brown fine grained sandstone and limonite concretions	35	90
		Siltstone, yellow, and blue-gray clay; contains thin beds of hard sandstone	10	100
		Sandstone, fine-grained, white, and white and yellow clay; contains hematite at 108 feet	10	110
		Clay, yellow and blue-gray, and thin beds of white to yellow-brown medium-grained sandstone	10	120
		Sandstone, medium-grained, yellow to yellow-brown; contains hematite	17	137
		Clay, mottled light-gray, red and yellow	53	190
		Clay, mottled light-gray, red, and yellow, and white to dark-gray clay; contains many pellets of white fine-grained hard sandstone and some pyrite	20	210
	Kiowa shale (Comanchean)
		Clay, gray and dark blue-gray; contains pyrite	10	220
		Shale, fissile, dark-gray, and gray clay; contains some gray fine-grained sandstone and pyrite. Bed of white hard limestone from 256 to 257 feet	60	280
		Shale, fissile, dark-gray, and gray clay; contains pyrite. Thin very hard layers at 286 and 289 feet	20	300
		Siltstone, sandy, gray to white, and dark-gray fissile shale; contains a few sandstone pellets	20	320
		Siltstone, sandy, gray, and dark-gray clay	16	336
		Clay, gray, and dark-gray fissile shale; contains shells and pyrite	42	378
	Cheyenne (?) sandstone (Comanchean)
		Siltstone, clayey, light-gray, and fine-grained sandstone	22	400
PERMIAN
		Siltstone, micaceous, sandy, red-brown	40	440

18-14-14bcc--Sample log of test hole in the SW 1/4 SW 1/4 NW 1/4 S. sec. 14, T. 18 S., R. 14 W., Barton County; drilled, 1945. Surface altitude, 1,916.8 feet.			Thickness, feet	Depth, feet
		Road fill	1	1
QUATERNARY--Pleistocene
	Sanborn formation
		Silt, gray to brown	10	11
		Silt, buff; contains caliche	12	23
CRETACEOUS--Gulfian
	Dakota formation
		Sandstone, medium-grained, white, and light blue-gray clay	4	27

18-14-15bb--Sample log of test hole at the NW cor. sec. 15, T. 18 S., R. 14 W., Barton County; drilled, 1945. Surface altitude, 1,988.1 feet.			Thickness, feet	Depth, feet
		Road fill	2	2
QUATERNARY--Pleistocene
	Sanborn formation
		Silt, light-gray, gray-brown, brown, and buff	15	17
		Silt, yellow-buff; contains caliche nodules and fragments of sandstone and "ironstone"	36	53
		Silt and clay; sandy, yellow	4	57
		Gravel, fine to medium, lime-cemented, hard; gravel is derived from Cretaceous rocks	2	59
CRETACEOUS--Gulfian
	Dakota formation
		Clay, light blue-gray	3	62

18-14-17add--Sample log of test hole in the SE 1/4 SE 1/4 NE 1/4 sec. 17, T. 18 S., R. 14 W., Barton County; drilled, 1945.			Thickness, feet	Depth, feet
		Road fill	2.5	2.5
QUATERNARY--Pleistocene
	Sanborn formation
		Silt, gray to brown	9.5	12
		Silt, tan to yellow buff; contains caliche	8	20
CRETACEOUS--Gulfian
	Graneros shale
		Clay, light blue-gray and yellow-brown	10	30

18-14-23add--Sample log of test hole in the SE 1/4 SE 1/4 NE 1/4 sec. 28, T. 18 S., R. 14 W., Barton County; drilled, 1945. Surface altitude 1,897.8 feet.			Thickness, feet	Depth, feet
QUATERNARY--Pleistocene
	Sanborn formation
		Silt, gray and brown	9	9
		Silt, buff; contains caliche nodules and sand	61	70
		Silt, yellow-buff; contains sandstone fragments and caliche	15	85
		Gravel, fine to medium, sand, and silt; derived from Cretaceous rocks	3	88
		Gravel, fine to medium, and sand; lime-cemented, hard,	3	91
CRETACEOUS--Gulfian
	Dakota formation
		Clay, light blue-gray and red	2	93

18-14-24dd--Sample log of test hole at the SE cor. sec. 24, T. 18 S., R. 14 W., Barton County; drilled, 1945. Surface altitude, 1,897.0 feet.			Thickness, feet	Depth, feet
		Road fill	2.5	2.5
QUATERNARY--Pleistocene
	Sanborn formation
		Silt, greenish gray and brown	5.5	8
		Silt, buff; contains caliche nodules and sandstone fragments from 37 to 38 feet	30	38
CRETACEOUS--Gulfian
	Dakota formation
		Sandstone, medium-grained, brown, and gray and yellow clay	4	42

18-14-29aa--Sample log of test hole at the NE cor. sec. 29, T. 18 S., R. 14 W., Barton County; drilled, 1945. Surface altitude, 1,920.8 feet.			Thickness, feet	Depth, feet
		Road fill	2	2
QUATERNARY--Pleistocene
	Sanborn formation
		Silt and clay; gray	5	7
		Silt and clay; sandy, gray and light-brown	15	22
		Silt, sandy, buff; contains caliche and some fine to medium gravel in lower part	98	120
		Gravel, fine to coarse, and sand	16.5	136.5
CRETACEOUS--Gulfian
	Dakota formation
		Clay, yellow, light blue-gray, and red	3.5	140

18-14-32aab--Sample log of test hole in the NW 1/4 NE 1/4 NE 1/4 sec. 32, T. 18 S., R. 14 W., Barton County; drilled, 1945. Surface altitude, 1,912.1 feet.			Thickness, feet	Depth, feet
		Road fill	2.5	2.5
QUATERNARY--Pleistocene
	Sanborn formation
		Silt, tan to dark-brown and gray; contains some sand, clay, caliche nodules, and a few thin lenses of fine to medium gravel	78.5	81
		Sand, fine to coarse, and silt	4	85
		Gravel, fine to medium, and sand; partly cemented	9	94
		Silt and clay; light-gray and yellow-brown	4	98
		Gravel, fine to coarse, and sand; contains silt in lower part	24	122
		Silt, light-gray and buff	4	126
		Gravel, fine to coarse, and sand	3	129
CRETACEOUS--Gulfian
	Dakota formation
		Clay, light-gray and red	5	134

18-14-32bdd--Sample log of test hole in the SE 1/4 SE 1/4 NW 1/4 sec. 32, T. 18 S., R. 14 W., Barton County; drilled, 1945. Surface altitude, 1,888.4 feet.			Thickness, feet	Depth, feet
		Road fill	3	3
QUATERNARY
	Alluvium
		Silt, sandy, gray, gray-brown, and yellow-gray	25	28
		Gravel, fine to medium, and sand	8	36
		Silt, sandy, gray to buff; interbedded with thin layers of fine to medium gravel and sand	24	60
		Sand, fine to coarse; contains some fine to coarse gravel and silt	11	71
		Silt, sand, and gravel; poorly sorted	6	77
		Gravel, fine to coarse, and sand	20	97
CRETACEOUS--Gulfian
	Dakota formation
		Shale, gray; contains carbonized and pyritized plant fragments	3	100

18-14-32dc--Sample log of test hole at the SW cor. SE 1/4, sec. 32, T. 18 S., R. 14 W., Barton County; drilled, 1945. Surface altitude, 1,891.1 feet.			Thickness, feet	Depth, feet
		Road fill	3	3
QUATERNARY
	Alluvium
		Silt and clay; light to dark-gray	21	24
		Silt, sandy, yellow-gray	4	28
		Gravel, fine, and sand; contains some medium to coarse gravel	15	43
		Gravel, fine to medium, and sand; contains thin beds of silt	7	50
		Gravel, fine to medium, and sand; contains some coarse gravel	17	67
		Silt, light-gray	2	69
		Gravel, fine to medium, and sand; contains some coarse gravel and yellow-gray silt	10	79
CRETACEOUS--Gulfian
	Dakota formation
		Clay, light blue-gray, mottled red and yellow	5	84

18-15-4cc--Sample log of test hole at the SW cor. sec. 4, T. 18 S., R. 15 W., Barton County; drilled, 1945. Surface altitude, 1,955.9 feet.			Thickness, feet	Depth, feet
		Road fill	1	1
		Soil, gray-brown	2	3
QUATERNARY--Pleistocene
	Sanborn formation
		Silt, buff, gray, and brown; contains caliche nodules from 9 to 17 feet and from 19 to 37 feet	34	37
		Silt, buff and light-gray; contains some fine to coarse gravel and sand; gravel is composed of Greenhorn limestone fragments	6	43
CRETACEOUS--Gulfian
	Graneros shale
		Limestone, hard, sandy, fossiliferous	0.5	43.5
		Shale, light-gray to brown	6.5	50

18-15-21bb--Sample log of test hole at the NW cor. sec. 21, T. 18 S., R. 15 W., Barton County; drilled, 1945. Surface altitude, 1,983.8 feet.			Thickness, feet	Depth, feet
		Road fill and soil	2	2
QUATERNARY--Pleistocene
	Sanborn formation
		Silt and clay; tan, brown, and gray; contains caliche nodules	28	30
		Silt, buff to tan; contains fine to medium gravel and sand	10	40
		Silt, gray-white to dark-buff	20	60
		Silt, sandy, light-gray and buff; contains fine to medium gravel in lower part	32	92
		Gravel, fine to coarse, and sand	9	101
CRETACEOUS--Gulfian
	Dakota formation
		Sandstone, fine- to medium-grained, yellow, and light-gray and yellow clay	2	103

18-15-28cc--Sample log of test hole at the SW cor. sec. 28, T. 18 S., R. 15 W., Barton County; drilled, 1945. Surface altitude, 1,912.1 feet.			Thickness, feet	Depth, feet
		Soil, dark gray to brown	3	3
QUATERNARY
	Alluvium
		Silt and clay; gray	21	24
		Gravel, fine to medium, and sand; contains some coarse gravel from 40 to 66 feet and thin beds of gray-green silt and clay from 48 to 60 feet	42	66
CRETACEOUS--Gulfian
	Dakota formation
		Clay, light-gray, red, and yellow	4	70

18-15-29ada--Sample log of test hole in the NE 1/4 SE 1/4 NE 1/4 sec. 29, T. 18 S., R. 15 W., Barton County; drilled, 1945. Surface altitude, 1,912.4 feet.			Thickness, feet	Depth, feet
QUATERNARY--Pleistocene and Recent
	Alluvium
		Silt and clay; light to dark-gray	23	23
		Silt, gray-white, and fine to medium sand	5	28
		Sand, fine to coarse; contains some fine gravel from 28 to 40 feet and much white to buff silt from 40 to 50 feet	22	50
		Gravel, fine to coarse, and sand	37	87
CRETACEOUS--Gulfian
	Dakota formation
		Clay, light blue-gray, and light-gray fine-grained sandstone	3	90

19-10-18bb--Sample log of test hole at the NW cor. sec. 18, T. 19 S., R. 10 W., Rice County; drilled, August 1946. Surface altitude, 1,782.9 feet.			Thickness, feet	Depth, feet
QUATERNARY
	Dune sand (Pleistocene and Recent)
		Sand, fine to medium, and silt; dark-gray	7	7
	Sanborn formation (Pleistocene)
		Silt, light-gray, and very fine to medium sand	8	15
		Sand, very fine to medium	25	40
		Sand, coarse to fine	35	75
		Gravel, fine to medium, sand, and silt; buff	21	96
		Gravel, fine to coarse, sand and silt; buff	7	103
		Silt, calcareous buff and very fine sand (lower part of interval may be Upland member of Meade formation),	32	135
	Meade formation (Pleistocene)
		Volcanic ash, partly indurated, white (Pearlette ash lentil)	2	137
		Silt, gray, and very fine to fine sand	15	152
		Gravel, fine to medium and sand	5	157
		Silt, gray, and very fine to coarse sand	22	179
		Gravel, fine to coarse, and sand	14	193
CRETACEOUS--Comanchean
	Kiowa shale
		Shale, gray, and white fine sandstone; contains some charcoal	4.5	197.5

19-11-7aa--Sample log of test hole at the NE cor. sec. 7, T. 19 S., R. 11 W., Barton County; drilled, 1943. Surface altitude, 1,811.0 feet.			Thickness, feet	Depth, feet
		Road fill	2.5	2.5
QUATERNARY--Pleistocene
	Sanborn formation
		Silt, clayey, black	1.5	4
		Silt, clayey, yellow-gray	4	8
		Silt and fine sand; light greenish-gray	8	16
		Silt, light greenish-gray	8	24
		Silt, sandy, gray and yellow-brown; contains caliche nodules	20	44
		Sand, fine to medium, and silt; gray and buff	6	50
		Silt, sandy, light-gray, gray, and buff; contains caliche	30	80
		Sand, fine to medium, and fine gravel; derived from Dakota formation	7	87
CRETACEOUS--Gulfian
	Dakota formation
		Sandstone, yellow-brown, and yellow and light blue-gray clay; contains some hematite	6	93

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