| Unit No. |
Description |
Thickness |
|
5
|
Limestone - light olive gray (5Y6/1) to yellowish gray (5Y8/1) with many coarse grained seams running in irregular patterns across the faces. Very fossilifrous locally. To the west about 1/2 mile about 8 ft. of reddish sandstone overlies this bed. Contact is irregular and probably represents some local channeling.
|
+ 4 ft.
|
|
4
|
Shale that grades laterally into shaly limestone. Shale color is pale yellowish brown (10YR6/2) to a very pale orange (10YR8/2), fossils are mainly crinoid stems. Limestone beds interlaminate
|
1.5 ft.
|
|
3
|
Limestone - not typically like Capt. Creek limestone elsewhere to the west. At this exposure it is only sparingly algae (Osagia?) and weathers (and fresh, too) grayish orange (10YR7/4) although several light olive gray (5Y6/1) beds are incorporated. It is very fossiliferous, mainly crinoid stems and brachiopods. What appears to be a small fault cuts in the bed, trending N76E & dipping 85 degrees North. May only be slumping along a joint plane. This limestone is very strongly jointed. Basal part is very clayey and apparently grades downward into the shale below
|
+ 8 ft.
|
|
2
|
Shale, medium light gray (N6), and very slightly silty in upper 10 ft. Grades downward into micaceous dark yellowish gray (5Y6/2) siltstone and ironstone concretions. Zone about 3 ft. thick and downward into light olive gray (5Y5/2) very slightly silty shale that contains lenses of ironstone concretions locally
|
55 ft.
|
|
1
|
Limestone - moderate yellowish brown (10YR6/2) and medium gray (N5) on fresh surface. Very fossiliferous and clayey. Fossils weather out of the clayey areas and make collection of fairly good specimens relatively easy. Fossils consist mainly of crinoid stems, Girtyocoelia, and brachiopods. Limestone breaks or weathers into thin flattish plates or ovioid shapes which cover the slope of the hillside. Becomes less clayey and thicker bedded near top
|
18 ft.
|
