|
Unit No. |
Description |
Thickness |
20
|
Residual
|
2.35 ft.
|
19
|
Siltstone, light gray and buff; and clay, silty; in very thin alternating beds, which vary from paper thin to one inch in thickness, contains bands of gypsum
|
6.5 ft.
|
18
|
Sandstone, bright red to pink, fine, varies to silt, many very small "specks" of hematite
|
1.6 ft.
|
17
|
Siltstone, light gray and bright yellow, clayey, massive, some concretionary limonite and gypsum
|
7.1 ft.
|
16
|
Clay, gray; and siltstone, yellow to gray, clayey; interbedded, some limonite bands
|
2.25 ft.
|
15
|
Clay, very light gray, fairly plastic, some yellow stain on bedding planes and in vertical and oblique joints
|
3.5 ft.
|
14
|
Clay, fairly dark gray, plastic, contains concretionary limonite and hematite
|
2.65 ft.
|
13
|
Sandstone, yellow to brown, medium- to fine-grained, upper half more resistant
|
1.65 ft.
|
12
|
Clay, gray to dark gray; and sandstone, yellow to rusty; in alternating thin beds. More sand and thinner bedding in bottom 1.5 ft., some gypsum
|
6.4 ft.
|
11
|
Clay, dirty yellow gray, silty, much gypsum, concretionary hematite or ironstone
|
1.25 ft.
|
10
|
Sandstone, dirty yellow, clayey, silty, full of gypsum, some hematite
|
1.25 ft.
|
9
|
Clay, light gray
|
1.0 ft.
|
8
|
Sandstone, gray and yellow, silty
|
1.25 ft.
|
7
|
Siltstone, clayey, gray, some yellow sand
|
1.35 ft.
|
6
|
Clay, dark gray, very plastic, joint fillings of bright yellow and gypsum, a four-inch yellow, limonitic bed near bottom
|
4.5 ft.
|
5
|
Clay, dark gray to gray, some yellow, some thin sand streaks, locally becomes thin alternating beds of light gray silt and clay
|
2.75 ft.
|
4
|
Clay, light gray, plastic to silty, some irregularity
|
2.5 ft.
|
3
|
Silt and clay, interbedded in paper thin layers, gray, some yellow staining
|
1.2 ft.
|
2
|
Clay, gray, silty, with irregular sandy patches, gypsum
|
1.0 ft.
|
1
|
Clay, gray to dark gray, plastic, with intermixed very fine light gray silt, thin-bedded, contains gypsum, pyrite, and traces of concretionary hematite, bottom 1.5 ft. contains chunks of lignite and poorly preserved plant remains
|
5.0 ft.
|
|