This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: ... beds are well exposed and easily studied in and about Nashville. 304. (a) Carter Limestone.--This is the conspicuous light-colored ...Read MoreThis historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 Excerpt: ... beds are well exposed and easily studied in and about Nashville. 304. (a) Carter Limestone.--This is the conspicuous light-colored limestone seen along Carter's creek, in Maury county. It is a light-blue, heavy-bedded limestone from 60 to 100 feet in thickness. It is seen in all of the counties of the Central Basin. Liberty in De Kalb, Statesville in Wilson, Woodbury in Cannon, and the lower part of Columbia in Maury are located upon it. Near Nashville it is seen in the lower part of the hills about Mt. Olivet and in the valley of Mill Creek. At a number of points it is quarried for building purposes and for burning with lime. 305. (b) Orthis Bed.--Bluish limestone, often siliceous or sandy. Sometimes in layers two or more inches in thickness, separated by shaly leaves. Weathers in places into yellowish sandstone and shale. Everywhere characterized by containing or by being made up of the small shells or valves, often silicified, of a brachiopod known as Orthis testudinaria. To some extent a phosphate limestone. From 50 to 70 feet. Seen in sections at Nashville, Columbia, Franklin, and many other points; the lowest rock at Mt. Pleasant; has been made into hydraulic cement at Clifton, in Wayne county. 306. This rock by its outcrop guides to the horizon of the Mt. Pleasant phosphate deposits, for the latter rest immediately upon it. The shell referred to is No. 8, one of the shells of Fig. 33, page 129. It is as represented here a little too small. It is often as large as a dime. A rock that abounds in the thin valves of this shell, or that is made up of them, may be set down at once as belonging to the Orthis Bed, for no other rock in the Central Basin is like it in this respect. Once recognized, the Mt. Pleasant phosphate may be looked for right above it. ...Read Less
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