Field notes, Cumberland River and Tennessee, 1899
Page 12
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Transcription
Bare Black Shale 600 A short distance below Breasy Shoal on the west bank of the river is the, following section: Black shale 2 1/2 in Sandy layer. Olinphlites led Dry. Miller Thin bedded 28 ft thin {Madison beds 38 ft. bedded Layer with branching Bryozoa and heavy Blickleaded 16 ft, About 5 1/2 feet below the top of the heavy Madison beds is a layer with more limestone characters, containing quite a number of branching Bryo- zooas. Typical Madison ortho is found below this Bryozoon layer. Orthus bifrons is found less than 2 1/2 feet below the top of the heavy Madison beds, Tuesday July 25 '99, BL Shale 629/19 About half way between Breasy creek and Belk Island, on the west slope, the following section is found: Black shale. 3' in layer sandstone, plurphatic Milleri Orthus bifrons both residents seen at my trip. 68 ft Richmond beds. The lower 20 feet are very fossilifer- ous, and don't get anywhere, but the alternates to. From 1-3 feet above the base of the Black shale a greenish clay shaly intermixes. Black shale below. While the number of fossils decreases from and to the top of the section and the lime becomes more clayey, there are nevertheless less plenty of fossils here. Along the bank north east of Belk Island very fossiliferous thin limestone with very marked layers, one exposed for a long distance dipping west. At the southern end of the island, the east bank of the river shows the came strata dipping east. About 1/4 mile beyond Belk island on the east bank of the river, the arches dip sweet almost as far as Belk Island. Farther southeast down the stream, there seems to be a southwest dip again. All of these dips are well marked but gentle.