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Grenola Limestone Environment of Deposition

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Locality 1

Center NE sec. 27, T. 28 S., R. 8 E., on Ferrley Ranch 100 yards east of ranch house, along banks of Elk River Thickness,
Grenola Limestone (38.6 feet)
Neva Limestone member (17.5 feet)
22. Limestone, cherty, whitish gray, deeply weathered; sparse Osagia, ramose bryozoans, gastropods 2.0
21. Limestone, nodular, thin bedded, light brownish gray; Allorisma, large ramose bryozoans, abundant echinoid spines and plates 2.3
20. Shale, platy, calcareous, light brown; Tetrataxis, Bairdia, Glyphostomella, fusulinids 0.9
19. Limestone, thin bedded, laminated weathered surface, gray to brownish gray; ramose bryozoans 0.8
18. Shale, blocky, light yellow brown; Hollinella, Tetrataxis, Bairdia, Glyphostomella 2.0
17. Limestone, argillaceous, dark brown, weathers to rough, pitted surface; large fusulinids, crinoid stems 0.6
16. Shale, blocky, very calcareous, grayish brown; fusulinids, Climacammina, Hollinella, Bairdia, Orthovertella, echinoid spines 2.7
15. Limestone, shaly, wavy bedded, blue gray; echinoid spines, crinoid stems 3.8
14. Limestone, argillaceous, laminated, brownish gray, pitted weathered surface; numerous small shell fragments; a 0.2-foot shale parting above 0.8
13. Shale, platy, light grayish brown; fusulinids, crinoid stems, fenestrate bryozoans, echinoid spines, Tetrataxis 1.1
12. Limestone, nodular, earthy, dark gray, unfossiliferous 0.5
Salem Point Shale member (9.4 feet)
11. Shale, covered 2.0
10. Limestone, argillaceous, yellow brown, weathers with a boxwork appearance 0.8
9. Shale, covered 1.4
8. Shale, platy, calcareous, dark gray at top, light bluish gray at bottom, 2-inch limestone in center, unfossiliferous 1.8
7. Limestone, medium bedded (0.3 to 0.6 foot), slabby, light gray; abundant Aviculopecten 1.2
6. Shale, platy, calcareous, blue gray, unfossiliferous 2.2
Burr Limestone member (5.1 feet)
5. Limestone, thin bedded, argillaceous; abundant Ammovertella 0.3
4. Limestone, massive, gray to dark brown; abundant Osagia, small gastropods, sparse ostracodes, bellerophontids 1.8
3. Shale, platy, brown, and thin (0.1 to 0.3 foot) nodular limestones; common pectinoid fragments 3.0
Legion Shale member (4.8 feet)
2. Shale, blocky, brown, two 2-inch gray, earthy limestone beds at base; sparse Cavellina in shale 4.8
Sallyards Limestone member (1.8 feet)
1. Limestone, thin bedded, wavy bedded, gray; sparse small pectinoid fragments, gastropods 1.8

Locality 2

SE sec. 4, T. 31 S., R. 8 E., railroad cuts along Santa Fe Railroad, and in small stream adjoining the railroad, between Murphy oil lease and Grand Summit Thickness,
Grenola Limestone (35.9 feet)
Neva Limestone member (17.3 feet)
28. Limestone, massive, wavy bedded, gray chert layer in center, top of limestone contains small Osagia, sparse fusulinids throughout 2.2
27. Shale, calcareous, light brown; echinoid spines, fenestrate bryozoans 0.7
26. Limestone, medium bedded, gray, weathers light yellow gray; robust fusulinids, fenestrate bryozoans 2.1
25. Limestone, thin bedded, flaggy, light gray; echinoid spines, calcareous foraminifers, fenestrate bryozoans 1.4
24. Shale, blocky, very calcareous, light yellow brown; fusulinids, crinoid stems, calcareous foraminifers 0.5
23. Limestone, thin bedded, shaly to platy, light gray to whitish brown; abundant fusulinids near base 1.0
22. Limestone, thin bedded to medium bedded, gray to light brown, gray chert nodules 1.3 feet below top; fusulinids, ramose bryozoans, large shell fragments, sparse ostracodes 5.1
21. Shale, platy, dark gray, two thin, nodular limestones at base. Shale contains Composita, Meekella, Dictyoclostus, Hustedia, Chonetina, fusulinids echinoid spines, ramose and fenestrate bryozoans, echinoid spines and plates, sparse conodonts, selacian remains, and Ditomopyge? 2.2
20. Limestone, thin bedded, nodular, blue gray; small fusulinids, ramose bryozoans, sparse ostracodes 2.1
Salem Point Shale member (6.1 feet)
19. Shale, platy, calcareous, dark gray, a thin, nodular, blue-gray limestone in center containing abundant small high-spired gastropods 2.4
18. Limestone, argillaceous, blue gray to dark gray, irregular tube-like nodules on lower bedding plane; contains sparse small, well-rounded, light-gray limestone fragments, small gastropods, sparse crinoid stems 0.2
17. Shale, platy, dark gray; charophytes, very sparse selacian remains 0.3
16. Limestone, nodular, argillaceous, dark gray brown to light yellow brown; numerous small Ammovertella 0.8
15. Shale, platy, gray, unfossiliferous; includes two thin, earthy limestone beds containing Aviculopecten, Septimyalina, Pleurophorus, and small gastropods 1.5
14. Limestone, wavy bedded, light brownish gray; numerous pectinoid fragments, small high-spired gastropods 0.2
13. Shale, blocky, dark gray brown, unfossiliferous 0.7
Burr Limestone member (4.1 feet)
12. Limestone, dense, limonitic, blue gray; abundant Osagia and small high-spired gastropods; separated from bed 11 by 0.1-foot brown shale parting 2.6
11. Limestone, dense, blue gray; abundant Osagia, crinoid stems, small gastropods, ostracodes 1.3
10. Limestone, shaly, flaggy, limonitic, brownish gray; large pectinoid fragments, sparse crinoid stems, echinoid spines 0.2
Legion Shale member (3.8 feet, upper 2.7 feet exposed)
9. Shale, blocky, slightly silty, hard, light brown to yellow brown; productid spines, abundant Cavellina; two 2-inch limestone beds, dense, earthy, unfossiliferous, in center 3.8
Sallyards Limestone member (4.6 feet)
8. Limestone, medium bedded, limonitic, light gray; very abundant Osagia, small high- and low-spired gastropods 2.9
7. Limestone, thin bedded, wavy bedded, argillaceous, grayish brown; sparse large pectinoid fragments 0.9
6. Limestone, medium bedded, light gray; small gastropods, ostracodes, small shell fragments 0.5
5. Limestone, wavy bedded, yellowish gray to gray, weathers light brown; long pectinoid fragments, sparse small gastropods 0.3
Roca Shale (8.6 feet exposed)
4. Shale, clayey, blocky, light yellow gray to brown, green mottling at base, unfossiliferous 2.1
3. Shale, clayey, blocky, light maroon 2.7
2. Shale, light green, deeply weathered 0.8
1. Shale, silty, calcareous, red to light maroon 3.0

Locality 3

W2 sec. 21, T. 32 S., R. 8 E., Cowley County, Kansas; road cut on Kansas Highway 38, 12 miles north and 2 miles west of Cedarvale, Kansas Thickness,
Grenola Limestone (31.7 feet exposed)
Neva Limestone member (6.1 feet exposed)
28. Limestone, medium bedded, dark brownish gray, chert nodules at top; ramose and fenestrate bryozoans, crinoid stems 2.0
27. Limestone, shaly, thin bedded, dark blue gray 0.6
26. Shale, calcareous, light brown; 3-inch limestone near base; Linoproductus, Composita, Septimyalina, Juresania 2.8
25. Limestone, granular, thin bedded, light gray; fenestrate bryozoans 0.7
Salem Point Shale member (9.5 feet)
24. Shale, platy, dark gray at top; blocky, brown at top; Hollinella, crinoid stems 2.2
23. Limestone, massive, earthy, argillaceous, brownish gray, unfossiliferous 0.9
22. Shale, platy, very calcareous, light gray brown 2.3
21. Limestone, light gray; Aviculopecten, small pyrite crystals 0.5
20. Shale, very calcareous, platy, blue gray; Aviculopecten, Ammovertella 1.8
19. Shale, platy, gray, 2-inch limestone in center, unfossiliferous 1.8
Burr Limestone member (4.0 feet)
18. Limestone, platy, argillaceous, like no. 17 but contains numerous ostracodes 0.2
17. Limestone, massive, yellow gray, separated from bed below by distinct wavy bedding plane; abundant Osagia, small gastropods, ostracodes 2.6
16. Limestone, massive, brownish gray; Osagia, small gastropods, crinoid stems 1.2
Legion Shale member (8.1 feet)
15. Shale, blocky, yellow brown, unfossiliferous 1.3
14. Shale, platy, blue gray, and thin-bedded nodular limestone containing Aviculopecten, Septimyalina, Juresania, fenestrate bryozoans, Euomphalus? 2.2
13. Shale and nodular limestone, gray; Aviculopecten, gastropods, myalinids 0.4
12. Limestone, earthy, nodular, gray, unfossiliferous 0.2
11. Shale, platy, dark gray 0.6
10. Limestone, nodular, earthy 0.2
9. Shale, platy, calcareous, dark gray, and thin, argillaceous, unfossiliferous limestone 2.1
8. Limestone, argillaceous, gray; few small pectinoid fragments 0.4
7. Shale, blocky, brown; Hollinella, Tetrataxis, Knoxina, Cavellina 0.7
Sallyards Limestone member (4.0 feet)
6. Limestone, granular, earthy, bluish gray, unfossiliferous 0.3
5. Limestone, massive, wavy bedded, blue gray; abundant Osagia, gastropods, ostracodes 2.9
4. Limestone, thin (0.2 foot) beds, wavy bedded, argillaceous, brownish gray; sparse shell fragments at bottom and common long (1 to 2 cm) shell fragments and Composita at top 0.8
Roca Shale (8.0 feet exposed)
3. Shale, silty, blocky, brown; charophytes 5.0
2. Shale, silty, red, unfossiliferous, red and green mottled shale at top 2.0
1. Shale, blocky, brown; Cavellina, Tetrataxis 1.0

Locality 4

NE SW and SE NW sec. 12, T. 34 S., R. 7 E., cuts along Missouri Pacific Railroad, 300 yards south of U. S. Highway 166, 6.7 miles west of Cedarvale, Kansas Thickness,
Grenola Limestone (50.4 feet)
Neva Limestone member (25.1 feet)
33. Limestone, light gray, deeply weathered; numerous long (1 to 2 cm) shell fragments 1.0
32. Covered 1.0
31. Limestone, thin bedded, cherty, light gray; robust fusulinids, crinoid stems, fenestrate bryozoans 7.8
30. Shale, blocky, calcareous, dark brown; Climacammina, Tetrataxis, Bairdia 0.6
29. Limestone, massive, light gray, gray chert nodules in center 1.7
28. Shale, platy, brown to dark gray, 0.9-foot earthy limestone in center. Shale contains robust fusulinids, Crurithyris, Neospirifer, Hustedia, Wellerella, Composita, fistuliporid, ramose, and fenestrate bryozoans 2.2
27. Limestone, massive, light gray, containing grayish-brown chert nodules; robust fusulinids, abundant Crurithyris, echinoid spines, ramose bryozoans 2.8
26. Limestone, thin bedded, wavy bedded, earthy, light brown to gray; common fusulinids, echinoid spines, crinoid stems, bryozoan fragments 2.0
25. Shale, calcareous, gray; fusulinids, ostracodes, ramose bryozoans 0.6
24. Limestone, massive to medium bedded, gray, containing 4-inch zone of black chert nodules; crinoid stems, echinoid spines, fenestrate bryozoans 3.1
23. Shale, very calcareous, platy, dark gray 0.5
22. Limestone, medium bedded to thin bedded, upper bed massive, brownish gray, containing small fusulinids, echinoid spines, fenestrate bryozoans 1.8
Salem Point Shale member (7.8 feet)
21. Shale, platy, bluish gray, unfossiliferous 0.3
20. Limestone, medium bedded, light gray; common bryozoan fragments, sparse small echinoid spines 1.0
19. Shale, gray, containing three 0.2-foot limestone beds; Juresania, Septimyalina, sparse Cavellina, productid spines 1.7
18. Shale, covered 4.8
Burr Limestone member (5.7 feet)
17. Limestone, argillaceous, light gray; abundant Osagia, small gastropods 2.4
16. Shale, deeply weathered; Derbyia, Chonetes, Marginifera, Composita, Juresania, Septimyalina 0.7
15. Limestone, gray; long pectinoid fragments 0.3
14. Shale, blocky, light yellow brown 0.8
13. Limestone, massive, wavy bedded, light gray; Osagia, ostracodes, small gastropods 1.5
Legion Shale member (8.4 feet)
12. Shale, blocky, light brown; includes 0.2-foot limestone bed containing Aviculopecten 1.7
11. Limestone, argillaceous, limonitic, dark gray to blue gray; bryozoan fragments, productid spines 1.5
10. Shale, platy, calcareous, hard, gray brown, unfossiliferous; nodular dark-blue-gray unfossiliferous limestone in center 1.5
9. Limestone, argillaceous, light grayish brown; Aviculopecten, Juresania, Septimyalina, sparse fenestrate bryozoans, crinoid stems 1.2
8. Shale, platy, calcareous, unfossiliferous 1.1
7. Limestone, earthy, wavy bedded, gray with brown splotches; sparse pectinoid fragments 0.3
6. Shale, like bed 4 0.4
5. Limestone, earthy, nodular, brownish gray; small shell fragments 0.2
4. Shale, blocky, brown; abundant Cavellina, sparse Hollinella, Glyphostomella 0.5
Sallyards Limestone member (3.4 feet)
3. Limestone, massive, slightly argillaceous, dark gray brown; abundant Osagia 1.4
2. Limestone, medium bedded, gray to light brown; abundant Osagia, small gastropods, ostracodes 1.2
1. Limestone, flaggy, argillaceous, gray, unfossiliferous at base, large ribbed pectinoid fragments and Ammovertella at top 0.8

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Kansas Geological Survey, Geology
Placed on web June 5, 2007; originally published June 1958.
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