Pg. 374, 381. Brown Creek bed in Strawn division. Friable white sandstone, 240 feet thick, with 25 feet of blue clay about 40 feet from top. Member of Strawn division [Strawn is 2nd from base of 5 Carboniferous divisions of Cummins, 1891]. Overlies Big Valley bed and underlies Spring Creek bed. Age is Pennsylvanian.
[Named from Brown Creek, Mills Co., Colorado River region, central TX.]
Source: US geologic names lexicon (USGS Bull. 896, p. 275).
Pg. 71. Brown Creek bed in Strawn series. Predominantly white sandstone 240 feet thick; includes 25 feet of blue clay about 40 feet from top. Underlies Spring Creek bed; overlies Big Valley bed. [Age is Pennsylvanian; age of Strawn not discussed.]
[Report area in Parker County, central Texas.]
Source: US geologic names lexicon (USGS Bull. 1200, p. 495); supplemental information from GNU records (USGS DDS-6; Denver GNULEX).
Pg. 58, pl. 27. [†Brown Creek bed of Strawn formation 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 common use today, and that name has been restricted to the base of Drake's Ricker bed.
Source: US geologic names lexicon (USGS Bull. 1200, p. 495).
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).