Gypsum Deposits in the United States Volume 8, No. 223

Gypsum Deposits in the United States Volume 8, No. 223

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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. 1904 edition. Excerpt: ... often concealed. The gypsum beds have been named as follows, from the base of the section up: Chaney, Kiser, Haystack, Cedartop, and Collingsworth. Fir. 13.--Section of a bluff on Salt Fork, 10 miles south of Mangum, Greer County, Okla. The Chaney gypsum is well exposed along the south side of Elm Creek, from Mangum, in Greer County, northwest of the Texas line. It extends into Roger Mills County, but is much changed in character, frequently being simply a gypsiferous band in the red clay. The Kiser gypsum varies considerably in local sections. Usually it is from 1 to 3 feet in thickness, and is best exposed in the western portion of Greer County. The Haystack gypsum is the heaviest of the ledges in this locality, varying in thickness from 18 to 25 feet. It is conspicuous along the bluffs on North Fork and Elm Fork. The Cedartop bod is massive and from 18 to 20 feet in thickness. It is very regular in occurrence, and is found capping buttes and bluffs, especially along the North Fork, Haystack, and the Elm Fork. The Collingsworth gypsum is not materially different from the two beds previously described. It varies from 18 to 20 feet in thickness, but inasmuch as it is the upper bed it does not always occur in the section, erosion having carried it away. The occurrence of the gypsum ledges has given rise to broken topography where the streams have cut their canyons. Over considerable areas in the southern part of the county, however, erosion has not exposed the beds, and the country is accordingly rather level. At such places the presence of the gypsum beneath is occasionally revealed by sink holes, which have resulted from its solution. Quartermaster division, 300 ft.: IlluiiuT division. 75 ft. Norman division. 1.000 ft.+ GEOLOGIC RELATIONS. Fig....show more

Product details

  • Paperback | 46 pages
  • 189 x 246 x 3mm | 100g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236585453
  • 9781236585455