Kentucky Geological Survey; Bulletin Volume 6

Kentucky Geological Survey; Bulletin Volume 6

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt: ...Which is so highly admired. Dr. Langenbeck, who superintended the tests, expressed the opinion that, mixed with a little flint, it would not require high heat, and would make very pretty cream-colored ware. The dark color of these clays seems to be due to the vegetable matter, which burns out, leaving a greyish mass. The alkali percentages are about what are found in the other clays, while that of the iron in the specimen from the Paris Bridge, near Murray, is very large, showing itself as a yellow ochre in the cracks and seams in the clay. The amount of lime is very small. This clay is evidently at the top of the Lagrange-Tertiary and at the base of two to ten feet of Brown Loam and Lafayette Gravel. James )uIan'cy Placc.--This land is located near the Mayfield and Murray Road, eight miles northwest of Murray, Calloway county. The farm joins that of A. B. Edwards on the north. Along a branch near Mr. Edwards' home, there is an exposure of dark-grey, very pyritous clay. Iron pyrites occurs in the clay in two forms; it is disseminated in small grains through the clay and also in the form of round and oblong con-. cretions. The deposit is covered by six inches of soil and five feet of gravel, as shown by the following section: 1. Soil and grass roots..................................... Sin. 2. Gravel (Lafayette)...................................... 5ft. 3. Dark, pyritous clay..................................... 2ft.+ The upper two feet of the deposit (No. 3 of the section) are exposed for several hundred yards along the branch. The exposure is in timbered lands and a luxuriant plant growth is found above the bed. Following are analyses of the refractory black clays, No. 2641, etc., noted in the preceding descriptions: AIR...show more

Product details

  • Paperback | 80 pages
  • 189 x 246 x 4mm | 159g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236808606
  • 9781236808608