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Geohydrology of Rawlins County

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Logs of Test Holes and Wells, continued

T. 1 S. || T. 2 S. || T. 3 S. || T. 4 S. || T. 5 and 6 S.

5-31-36dd. Sample log of test hole in the SE SE sec. 36, T. 5 S., R. 31 W., 70 feet north, 30 feet west of the SE cor. sec. 36; drilled June 1952. Surface altitude, 2,905.2 feet. Thickness,
feet		 Depth,
feet
Quaternary--Pleistocene
Sanborn formation
Peoria silt member
Silt, clayey, noncalcareous, black 1 1
Clay, silty, calcareous, tan-gray 8 9
Silt, calcareous, tan to gray 8 17
Clay, silty, calcareous, tan 5 22
Loveland silt member
Clay, silty, calcareous, tan 6.5 28.5
Tertiary--Pliocene
Ogallala formation
Clay, compact, blocky, tan-brown 1.5 30
Sand and gravel, fine to coarse; contains some light-tan sandy clay 5 35
Sand, fine to coarse, and fine gravel; contains some tan sandy clay 6 41
Clay, sandy, red-brown 3 44
Sand, fine to coarse, very clayey, red-brown 3 47
Sand, fine to coarse, and fine gravel 1 48
Clay, silty, tan-brown 2.5 50.5
Sand, fine to medium, loosely cemented 7.5 58
Sand, fine to coarse, and fine gravel 7 65
Sand, medium to coarse, clayey, brown 3 68
Sand, fine to coarse, clayey 6 74
Sand, fine, silty, cemented 4 78
Sand, fine to coarse, clayey, red-brown 12 90
Clay, brown to red; contains a few thin sand stringers 9 99
Clay, gray; contains a few thin sandy silt stringers 9 108
Silt, light-gray 10 118
Sand, fine to coarse, clayey 10 128
Sand and gravel, fine to coarse 3 131
Clay, sandy, tan to gray 3 134
Sand, fine to coarse 14.5 148.5
Clay, sandy, light-gray 2.5 151
Sand and clay, limy, light-tan 5 156
Sand, fine to coarse; contains some silt 7 163
Cretaceous--Gulfian
Pierre shale
Shale, weathered, light-gray to yellow 7 170

5-33-6bb. Sample log of test hole in the NW NW sec. 6, T. 5 S., R. 33 W., Rawlins County; 5 feet east, 30 feet south of the NW cor. sec. 6; drilled July 1952. Surface altitude, 3,191.0 feet. Thickness,
feet		 Depth,
feet
Quaternary--Pleistocene
Sanborn formation
Silt, clayey, noncaleareous, black 1 1
Clay, compact, silty, noncalcareous, dark-brown 2 3
Clay, silty, calcareous, tan 4 7
Silt, calcareous, gray 14 21
Clay, silty, calcareous, tan to brown 20 41
Clay, compact, calcareous, tan-brown 36 77
Tertiary--Pliocene
Ogallala formation
Clay, silty, light-tan; contains some fine sand 7 84
Silt and fine sand, cemented, light-tan 5 89
Sand, fine to coarse, silty; contains some fine to medium gravel 10 99
Sand and gravel, fine to coarse; contains some gray sandy clay 20 119
Clay, very sandy 10 129
Sand and clay, silty, loosely cemented 10 139
Sand, fine to medium, clayey 15 154
Sand and gravel, fine to coarse 10 164
Sand, cemented, very hard 4 168
Sand, fine to coarse, and fine gravel 4 172
Sand and gravel, fine to coarse, clayey 13 185
Sand, fine to coarse; contains a few thin zones of sandy clay 10 195
Sand, fine to coarse, partly cemented 39 234
Clay, sandy, light-gray 4 238
Sand, fine to medium, silty 17 255
Clay, sandy, yellow-green 5 260
Sand, fine to coarse, silty 16 276
Gravel, fine to coarse 3 279
Sand, fine to coarse, silty 5 284
Cretaceous--Gulfian
Pierre shale
Shale, clayey, black 6 290

5-33-36dd. Sample log of test hole in the SE SE sec. 36, T. 5 S., R. 33 W., 100 feet north, 8 feet west of the SE cor. sec. 36; drilled August 1952. Surface altitude, 3,127.0 feet; depth to water level, 145.15 feet. Thickness,
feet		 Depth,
feet
Road fill 3 3
Quaternary--Pleistocene
Sanborn formation
Peoria silt member
Silt, calcareous, gray 25 28
Loveland silt member
Clay, compact, weakly calcareous, brown 4 32
Clay, silty, calcareous, tan 23 55
Tertiary--Pliocene
Ogallala formation
Clay, light-tan; contains some gravel 14 69
Clay, limy, tan-white; contains some sand and gravel 3 72
Sand and gravel, clayey 20 92
Sand and gravel, loosely cemented 6 98
Sand and very sandy clay; contains some gravel 40 138
Sand and gravel; contains some silt and clay 37 175
Clay, sandy, tan to gray 12 187
Sand, fine to coarse; contains a few thin clay stringers, 20 207
Sand, fine to medium; contains some silt and clay 6 213
Cretaceous--Gulfian
Pierre shale
Shale, weathered, yellow-gray 6 219
Shale, clayey, dark-gray 5 224

5-34-31cc. Sample log of test hole in the SW SW sec. 31, T. 5 S., R. 34 W., 60 feet north, 5 feet east of the SW cor. sec. 31; drilled July 1952. Surface altitude, 3,236.5 feet; depth to water level, 113.70 feet. Thickness,
feet		 Depth,
feet
Quaternary--Pleistocene
Sanborn formation
Peoria silt member
Silt, clayey, noncalcareous, black 2.5 2.5
Silt, calcareous, gray 9.5 12
Silt, calcareous, gray-tan 14 26
Clay, calcareous, tan to gray 9 35
Loveland silt member
Clay, compact, silty, weakly calcareous, brown 3 38
Tertiary--Pliocene
Ogallala formation
Clay, limy, gray to tan 13 51
Sand and gravel, clayey, partly cemented 7 58
Clay, sandy, tan to white 11 69
Sand and gravel, fine to coarse 10 79
Sand, fine to coarse, and fine gravel 50 129
Clay, sandy, brown 4 133
Sand, fine to coarse, and fine to medium gravel 14 147
Clay, brown; contains much fine gravel 2 149
Sand, fine to coarse, partly cemented; contains some tan clay 40 189
Sand, fine to coarse; contains some silt and yellow clay, 37 226
Sand and gravel, fine to coarse 4 230
Cretaceous--Gulfian
Pierre shale
Shale, weathered, yellow and gray 5 235
Shale, clayey, dark-gray 2 237

5-36-2aa. Sample log of test hole in the NE NE sec. 2, T. 5 S., R. 86 W., on south shoulder of road about 0.2 mile west of the NE cor. sec. 2; drilled July 1952. Surface altitude, 3,298.5 feet; depth to water level, 172.90 feet. Thickness,
feet		 Depth,
feet
Road fill 2 2
Quaternary--Pleistocene
Sanborn formation
Peoria silt member
Silt, calcareous, tan 33 35
Clay, very silty, calcareous, tan 7 42
Silt, clayey, calcareous, tan-brown 2 44
Loveland silt member
Clay, compact, weakly calcareous, tan-brown 2 46
Tertiary--Pliocene
Ogallala formation
Clay, silty and sandy, light-tan 9 55
Sand and gravel, fine to coarse 5 60
Sand, silty, partly cemented 16 76
Sand, fine to coarse, and fine gravel 3 79
Sand, fine, cemented, dark-brown 3 82
Clay, sandy, tan 7 89
Sand, fine to coarse, clayey, loosely cemented 20 109
Sand, coarse, and fine to coarse gravel 7 116
Clay, sandy, gray to tan 6 122
Sand, fine to coarse, clayey, partly cemented 18 140
Clay, sandy, tan to brown 8 148
Sand, fine to coarse, cemented 45 193
Sand, fine to coarse, silty, loosely cemented 24 217
Sand, fine to medium, cemented; contains a few thin clay stringers 10 227
Sand, fine to medium, loosely cemented 11 238
Clay, silty, tan to green 8 246
Sand, fine to medium; contains a few clay stringers 9 255
Sand, medium to coarse, silty, loosely cemented 13 268
Cretaceous--Gulfian
Pierre shale
Shale, clayey, gray to black 8 276

5-36-31cc. Sample log of test hole in the SW SW sec. 31, T. 5 S., R. 36 W, 10 feet east, 20 feet north of the SW cor. sec. 31; drilled July 1952. Surface altitude, 3,427.7 feet; depth to water level, 180.25 feet. Thickness,
feet		 Depth,
feet
Quaternary--Pleistocene
Sanborn formation
Peoria silt member
Silt, noncalcareous, black 2 2
Silt, calcareous, gray 37 39
Clay, calcareous, silty, tan-brown 6 45
Clay, very silty, calcareous, tan 33 78
Tertiary--Pliocene
Ogallala formation
Sand and gravel, clayey, cemented 6 84
Sand and gravel; contains some silt and clay 26 110
Sand, fine to medium, very clayey 17 127
Sand, fine to coarse, and fine gravel 9 136
Clay, tan-brown; contains a few sand grains 3.5 139.5
Sand and gravel, clayey 25.5 165
Clay, sandy, tan-brown 4 169
Sand, fine to coarse, and coarse gravel 7 176
Clay, sandy, tan-brown 13 189
Clay, light-tan; contains much fine to medium gravel, 3 192
Sand and gravel, coarse to fine; contains some clay 16 208
Sand, fine to coarse 2 210
Clay, sandy, light-tan 16 226
Sand, fine to medium; contains some clay and considerable limy silt 81 307
Sand, fine to coarse, and fine gravel 17 324
Cretaceous--Gulfian
Pierre shale
Shale, weathered, yellow 5 329
Shale, clayey, dark-gray to black 7 336

6-31-6bb. Sample log of test hole in the NW NW sec. 6, T. 6 S., R. 31 W., 66 feet east, 9 feet south of road intersection; drilled September 1948. Surface altitude, 2,997.9 feet; adapted from log 1, Thomas County (Frye, 1945, p. 88). Thickness,
feet		 Depth,
feet
Road fill 3 3
Quaternary--Pleistocene
Sanborn formation
Silt and very fine sand, yellow-gray; contains abundant snails 20 23
Silt, clay, and sand, light-buff to brown 11 84
Tertiary--Pliocene
Ogallala formation
Gravel, sand, and silt, btiff and gray; partly cemented by calcium carbonate 23 57
Silt and sand, pink-tan 7 64
Gravel and sand 21 85
Silt, sand, and caliche, gray and buff 27 112
Gravel and sand 6 118
Silt, sand, and caliche, grading downward into silt, clay, and caliche, gray 31 149
Sand, becoming coarser downward and containing some clay at base 37 186
Cretaceous--Gulfian
Pierre shale
Shale, dark-gray 14 200

6-33-6bb. Sample log of test hole in the NW NW sec. 6, T. 6 S., R. 33 W., 102 feet east, 80 feet south of center of road intersection; drilled October 1943. Surface altitude, 3,159.0 feet; adapted from log 2, Thomas County, (Frye, 1945, p. 88). Thickness,
feet		 Depth,
feet
Quaternary--Pleistocene
Sanborn formation
Silt; contains admixtures of fine sand and clay in some zones and some nodules of caliche, tan to gray; contains abundant snails 33 33
Silt, sand, and caliche, gray-white 7 40
Tertiary--Pliocene
Ogallala formation
Silt, sand, and gravel, buff; partly cemented by calcium carbonate 10 50
Gravel and sand, gray-buff to brown; contains some zones cemented by calcium carbonate 54 104
Silt and caliche, pink-tan; contains some clay and sand 18 122
Gravel, medium to fine, and sand; contains some silt, 8 130
Silt, sand, gravel, and caliche, gray to tan 30 160
Gravel and sand; cemented by calcium carbonate; gray to brown 9 169
Caliche, clay, and silt; contains some sand, light-tan to white 25 194
Gravel, fine, and sand 11 205
Silt, clay, sand, and gravel 3 208
Cretaceous--Gulfian
Pierre shale
Shale, light-blue-gray mottled with yellow-brown 2 210
Shale, blue-gray 5 215

6-35-6bb. Sample log of test hole in the NW NW sec. 6, T. 6 S., R. 35 W., 39 feet south, 42 feet east of the center of road intersection; drilled September 1943. Surface altitude, 3,330.2 feet; adapted from log 3, Thomas County, (Frye, 1945, p. 89). Thickness,
feet		 Depth,
feet
Quaternary--Pleistocene
Sanborn formation
Silt, yellow-gray; contains abundant snails 50 50
Tertiary--Pliocene
Ogallala formation
Silt, caliche, sand, and gravel, tan 29 79
Gravel and sand 21 100
Silt, caliche, sand, and gravel, buff 23 123
Gravel, sand, and caliche 34 157
Silt, caliche, sand, and gravel 53 210
Sand, medium to fine, loosely cemented with calcium carbonate 20 230
Silt and sand, contains caliche, gray 9 239
Sand, medium to fine 11 250
Silt, sand, and caliche, light brown 8 258
Sand and silt, buff 33 291
Cretaceous--Gulfian
Pierre shale
Shale, light-yellow grading downward to dark-gray 9 300

T. 1 S. || T. 2 S. || T. 3 S. || T. 4 S. || T. 5 and 6 S.

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Kansas Geological Survey, Geology
Placed on web Nov. 17, 2008; originally published Dec. 1956.
Comments to webadmin@kgs.ku.edu
The URL for this page is http://www.kgs.ku.edu/General/Geology/Rawlins/08_logs5.html