Field notes, Cumberland River and Tennessee, 1899
Page 13
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Transcription
Tuesday July 25 '99. About 1/4 mile beyond Belk Island, on the east bank of the river, where the high cliffs begin; the following section is formed: Black shale apparently rests directly upon Ricken and beds. White layer possibly about, not seen. mud clays, less fossiliferous. chiefly Bryozoons massive very fossiliferous, 6 ft above river. Salechnus & Tetradinium abundant. [illegible] the upper 50 feet of the Ricken and beds mud clays, and less fossiliferous nonetheless carry Orthus lividatus Orthus occidens, also enough to make possible to find these fossils at all 2 feet of rock below these 50 are pure white in appearance and are char- acterized by containing chiefly oolithic Bryozoons. Lower 17 3/4 feet are very fossilifer- ous Owing to the facts that there is an amount of regular limestone interrupted by this clay partings, and as we have the appearance of the rocks at Hopping and Hull + Can tain some fauna. At the bottom of this section Salechnus & Tetradinium fossiliferous mud clays 20 feet thick. Tuesday cont. At the bend of a river about 1/2 beyond Belk Island I took the following photographs. 5. A little further down the river. 6, 7. One at time exposure ... 8. A little farther up the river. 9. One at time exposure. 10. 11. Still further up the river. All of these views were taken within 300 feet of me another. The focal notes will enable me to re- produce the elements of the sections in three photographs! More white shale, a little above here trees begin again. Thick limestone at Very light Waverly A limestone layer A little more bare. Tips of tree reach about thus: a little darker in color. Waverly shales Black shale Trees begin at this level Vertical cliff of Madison with few fossils. Well bedded Ricken and gravel slide at base