Field notes, Cumberland River and Tennessee, 1899
Page 32
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Friday Aug 11 '99. D. This should be the Waldron Shale... The lower 1 3/4 ft, consist of shaly limestone with fossils. A- nery thin the large Pynch mella Stricklandi. Above this lie 6 ft. of Clay with num- erous specimens of the flat limons. This layer is an one fossiliferous east of Pegram 1/2 miles. See parts next page, E. This is a very fine building rock and should be equivalent to the Simisville limestone, stratigraphi- cally. Phosphate rock abound in Lingulae, Mr Finbee + Blee's Hollow the following section, found. Brown phosphatic rock 3 in, at base/ 6 in of fissile Black Shale / 9 inches of dark phos- phate rock with Lingulae. Plenty of Black Shale with earthy layers intercalated at various levels, A cherty bed about 1 foot thick occurs about 10 feet from base of Waverly. The Black Shale presently goes un- der cover a short distance W. of the bridge, it dips strongly S.W. as to get to the water's edge, a quarter of mile south of the bridge. Coming to the same place the lower limignus are quickly brought up in spring E, Saturday Aug 12, '99. [12] About 1/2 miles E of Pegram Sta. on N. side of RR is bridge of S arm Walker, A short distance West of same a road leads SW through the woods to Harpeth river. Another road runs along the north bank of this river, and following this road Eastward, the following section is found at the end of the cliffs, near the point where the road leaves both the cliffs and the river. Black Shale 14 miles phospatic rock 28 ft. limestone = Simsville L. C. 12 1/2 ft of clay + claysl, Waldron B Fossils 4th p.foll. 21 1/2 ft. Laurel limestone, A 51 feet down to river's edge not exposed. See next section. A. Pizginnus gemmiformis occurs below the Waldron shale bed. B. The lower part of the Waldron shale is more like a clayey limons + is very fossiliferous. The upper part is pure Clays, The very top is not exposed. Exposed at: C. The Simsville limestone is 20 ft thicker here than 2 1/2 miles west- ward at the bridge W of Pegram.