. Carnegie Institution of Washington publication. 102 ENVIRONMENT OF VERTEBRATE LIFE, ETC. sections. The Rustler limestone lies upon an eroded surface of the Delaware limestone and very probably this eroded surface was at one time covered b}/ Capitan Fig. 3.—Map showing Beede's idea on the paleogeography of red beds in the southern part of the Plains Province (after Beede). In his Review of the Geology of Texas, Udden^ describes the formations concerned as follows: "Delaware Mountain Formation. "This formation is composed of an alternation of gray and bluish limestone wit
. Carnegie Institution of Washington publication. 102 ENVIRONMENT OF VERTEBRATE LIFE, ETC. sections. The Rustler limestone lies upon an eroded surface of the Delaware limestone and very probably this eroded surface was at one time covered b}/ Capitan Fig. 3.—Map showing Beede's idea on the paleogeography of red beds in the southern part of the Plains Province (after Beede). In his Review of the Geology of Texas, Udden^ describes the formations concerned as follows: "Delaware Mountain Formation. "This formation is composed of an alternation of gray and bluish limestone with white and brown sandstone. At the lower part is a blue-black thin-bedded limestone, shaly in part. The base is not exposed. Toward the north of the Delaware Mountains the formation becomes more sandj'; toward the south the limestone increases in amount. In the Apache Mountains the formations consist entirely of massive whitish-gray limestone. As the base of the formation is unknown, the entire thickness can not be determined, but is at least 2,200 feet. The Delaware formation forms a broad zone composing the Delaware, the * Udden, J. A., Bull. University of Texas No. 44, p. 54, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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