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Map showing publication footprint
  • Usage in publication:
    • Big Valley bed
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Clay
    • Sandstone
  • AAPG geologic province:
    • Bend arch
    • Llano uplift
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. 374, 380. Big Valley bed in Strawn division. In descending order: (1) 150 feet of bluish and sandy or black and shaly clay; (2) 150 feet of sandstone, mostly massive but in part flaggy and a little shaly, commonly conglomeratic near top and calcareous in middle and upper part; and (3) 200 feet of clay, generally blue, with considerable blackish shale and a little sandstone. Is member of Strawn division [Strawn is 2nd from base of 5 Carboniferous divisions of Cummins, 1891]. Underlies Brown Creek bed and overlies Bull Creek sandstone. Age is Pennsylvanian.
[Named from Big Valley, Mills Co., Colorado River region, central TX.]

Source: Publication; US geologic names lexicon (USGS Bull. 896, p. 188).


Map showing publication footprint
  • Usage in publication:
    • Big Valley bed
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Fort Worth syncline
Publication:

Zimmerman, D.A., and Glover, G.D., 1956, Summary of geological nomenclature, Morrow, Bend, and Strawn series, Fort Worth basin area [Texas]: Society of Economic Paleontologists and Mineralogists, Permian Basin Section, Field Trip Guidebook, Spring meeting and field symposium, May 11-12, 1956, p. 70-78.


Summary:

Pg. 70. Big Valley bed in Strawn series. Consists of (descending): 150 feet of bluish and sandy or black and shaly clay; 150 feet of sandstone, mostly massive but in part flaggy and a little shaly; and 200 feet of clay, generally blue, with considerable blackish shale and a little sandstone. Underlies Brown Creek bed; overlies Bull Creek sandstone. [Age is Pennsylvanian; age of Strawn not discussed.]
[Report area in Parker County, central Texas.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 342); supplemental information from GNU records (USGS DDS-6; Denver GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Big Valley bed
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Bend arch
Publication:

Eargle, D.H., 1960, Stratigraphy of Pennsylvanian and Lower Permian rocks in Brown and Coleman Counties, Texas, IN Stafford, P.T., and others, Pennsylvanian and Lower Permian rocks of parts of west and central Texas: U.S. Geological Survey Professional Paper, 315-D, p. D55-D77. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp315D]


Summary:

Pg. 58, pl. 27. [†Big Valley bed of Strawn group not used by the USGS; a local term considered obsolete. See also entry under Strawn.] Drake (1893) separated rocks of Strawn group [division] into 20 units of alternating sandstone and shale beds. He gave local names to these units, or "beds" as he termed them, and numbered them from bottom to top, 4 to 23. Only Drake's name for upper unit, the Ricker, is in use today, and that name has been restricted to base of Drake's Ricker bed.

Source: US geologic names lexicon (USGS Bull. 1200, p. 342).


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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 ( ).

Slash (/) indicates name does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).