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Geologic Unit: Bouldin
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  • Usage in publication:
    • Bouldin member
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Limestone
    • Shale
    • Bentonite
  • AAPG geologic province:
    • Ouachita folded belt
Publication:

Adkins, W.S., and Lozo, F.E., 1951, Stratigraphy of the Woodbine and Eagle Ford, Waco area, Texas, IN Lozo, F.E., ed., with assistance of Bob F. Perkins, The Woodbine and adjacent strata of the Waco area of central Texas; a symposium: Southern Methodist University, Fondren Science Series, no. 4, p. 101-164., A symposium for the 1951 field trip sponsored by the East Texas Geol. Soc


Summary:

Pg. 120-121, 139 (fig. 17), 141 (fig. 18). Bouldin member of Lake Waco formation. Proposed for upper member of formation. Composed of interbedded grayish-white to brownish silty limestone and silty shales with bentonites. Thickness at type locality about 9 feet. Northward from Travis County, a flagstone member near to or identical with stratigraphic position of type Bouldin flags occurs at scattered localities across Williamson, Bell, and McLennan Counties; as exposed in Blue Cut north of Moody, this limestone flag unit is approx. 14 feet thick. Overlies Cloice member (new); underlies emended South Bosque formation. Age is Cretaceous (Gulf series).
Type locality and section: Bouldin Creek and diversion cut near the Missouri Pacific-Missouri, Kansas and Texas RR, between Milton Street and Barton Springs Road, Austin, Travis Co., central TX.

Source: US geologic names lexicon (USGS Bull. 1200, p. 440).


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 ([ ]).

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