|
Unit No. |
Description |
Thickness |
13
|
Sandstone - grayish orange (10YR7/4) to grayish red (10R4/2), fine grained, fairly well sorted, subangular grains of quartz make up 95%; also a few rounded to angular shale fragments and a few limestone grains; thin-bedded (1-2 in.), iron stained, finely micaceous, plant fragments
|
31 ft.
|
12
|
Siltstone - yellowish gray (5Y8/1) generally very well bedded into bed 1/8 - 3/8 in. thickness; a few beds up to 2 inches in thickness but lenticular; many plant fossils on bedding planes; two beds (lower one very lenticular) up to 2 ft. thick locally in upper half; very finely micaceous and locally cross-bedded; uppermost part shaly
|
12.7 ft.
|
11
|
Coal - weathered, much vitrain, bony at center
|
0.7 ft.
|
10
|
Claystone - olive gray (5YR4/1), very slightly silty, breaks into cuboidal fragments about 1/4 in. in size
|
3 ft.
|
9
|
Limestone - marly, pale yellowish orange (10YR8/6) seamed with moderate yellowish brown (10YR5/4) limonite seams, breaks or weathers into nodules, unfossiliferous
|
0.3 ft.
|
8
|
Shale - light gray (N7) to pale brown (5YR5/2), very slightly silty, unfossiliferous, fissile
|
20 ft.
|
7
|
Limestone - medium gray (N5), very fossiliferous with Osagia, Neospirifer, Derbyia, Composita, several genera of fenestrate bryozoans, encrusting bryozoans, many crinoid stems, horn coral (Caninia), Hustedia, ramose bryozoans, huge Echinoconchus, Syringopora, a crinoid calyx on eastern of three blocks; most fossils in upper inch, but abundant throughout
|
1.5 ft.
|
6
|
Siltstone - yellowish gray (5Y7/2), finely micaceous, very thin bedded, several thin (1/4 - 1/2 inches) platy unfossiliferous limestone beds in lower 2 ft., thin shaly beds interlaminated, a few small ironstone concretions in upper 5 ft., upper 2 ft. not visible but appears to be calcareous siltstone
|
26 ft.
|
5
|
Limestone - light olive gray (5Y6/1), unfossiliferous, grades upward into light olive gray massive micaceous siltstone in upper half
|
0.4 ft.
|
4
|
Shale - yellowsh gray (5Y7/2), fissile, micaceous
|
0.2 ft.
|
3
|
Limestone - medium light gray (N6), weathers dark yellowish orange (10YR6/6) to light olive gray (5Y6/1), hard, non-marine, unfossiliferous
|
0.1 ft.
|
2
|
Shale - dark yellowish brown (10YR4/2) to medium gray (N5), slightly silty, finely micaceous, fissile, a few 1/2inch ironstone concretions in beds throughout, ripple marked in lower 2 ft.
|
14 ft.
|
1
|
Limestone - medium light gray (N6), weathers light olive gray (5Y5/2) to yellowish gray (5Y7/2), hard, vertically jointed, dense, fossiliferous but not profusely so; contains Marksia? many large and small brachiopods, crinoids stems
|
1.5 ft.
|
|