| Unit No. |
Description |
Thickness |
|
12
|
RESIDUAL
|
1.0 ft.
|
|
11
|
CLAY--silty to clayey silt, light gray with yellow limonitic streaks, typical upper Dakota
|
4.0 ft.
|
|
10
|
SILT TO FINE SANDSTONE--gray with slight yellow
|
3.2 ft.
|
|
9
|
CLAY--plastic, buff to brown with purple streaks
|
1.0 ft.
|
|
8
|
CLAY--plastic, dark gray to nearly black, many small slickensides
|
1.8 ft.
|
|
7
|
CLAY--dark gray
|
0.4 ft.
|
|
6
|
SANDSTONE--fine to silt, light gray to yellow, cross-bedded, irregular at top, thickens to east, becomes more clayey toward bottom and also shows more yellow
|
7.5 ft.
|
|
5
|
CLAY--silty, gray and yellow
|
1.7 ft.
|
|
4
|
CLAY--plastic, gray with considerable yellow in large areas and considerable yellow joint stain
|
3.0 ft.
|
|
3
|
CLAY--plastic, gray to dark gray streaks with some yellow stain
|
3.7-4.1 ft.
|
|
2
|
CLAY--silty, gray with some yellow streaks
|
3.6-4.0 ft.
|
|
1
|
SANDSTONE--fine to silty, clayey, yellow
|
0.8 ft.
|
