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Geologic Unit: Coleman
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Map showing publication footprint
  • Usage in publication:
    • Coleman bed
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Clay
    • Limestone
    • Shale
  • AAPG geologic province:
    • Bend arch
Publication:

Drake, N.F., 1893, Report on the Colorado coal field of Texas, IN Fourth annual report of the Geological Survey of Texas, 1892: Geological Survey of Texas Annual Report, v. 4, p. 357-444. [Available online from the University of Texas-Austin library: http://www.lib.utexas.edu/books/dumble/]


Summary:

Pg. 421, 424. Coleman bed in Albany division [Wichita group]. To south mostly marly yellowish clay with some thin beds of limestone. To north chiefly black or dark-gray sandy clay shale with many white specks scattered through it. Thickness 50 to 100 feet. Member of Albany division [Wichita group]. Overlies bed No. 5 (25 to 60 feet of limestone with some marly clay) and underlies Elm Creek bed. Age is possibly Permian.
[Named from Coleman, Coleman Co., Colorado River region, central TX.] Most of town is built on the outcrop.

Source: Publication; US geologic names lexicon (USGS Bull. 896, p. 487).


Map showing publication footprint
  • Usage in publication:
    • Coleman clay
    • Coleman limestone
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Bend arch
Publication:

Plummer, F.B., and Moore, R.C., 1922, Stratigraphy of the Pennsylvanian formations of north-central Texas: University of Texas Bulletin, no. 2132, 237 p.


Summary:

Pg. 193, pl. 11. Divided their Admiral formation (basal formation of Wichita group) into (descending): Elm Creek limestone, 20 to 50 feet; "Coleman clay" (Drake), 148 feet; Coleman limestone, 12 feet; "Bed No. 5" of Drake, 3 feet; Indian Creek shale, 105 feet; Hordes Creek limestone, 2 feet; Lost Creek shale, 46 feet. They defined "Coleman clay" as consisting of (descending) grayish yellow shale, 22 feet; yellow-gray limestone, 2 feet; black shale, 34 feet; muddy brown limestone, 1 foot; dark-gray shale, 17 feet; gray limestone, 1 foot; shale, 11 feet; sandy shale, 3 feet; shale, 58 feet; and defined Coleman limestone as consisting of 3 feet of yellow gray limestone underlain by 9 feet of yellow shale. Age is Permian.

Source: US geologic names lexicon (USGS Bull. 896, p. 487).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

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