- Usage in publication:
-
- Bruceville chalk-marl
- Modifications:
-
- Areal extent
- Dominant lithology:
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- Chalk
- Marl
- AAPG geologic province:
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- Ouachita folded belt
Summary:
Pg. 353. Bruceville chalk-marl of Austin group. According to Durham, 1957 (unpub. PhD dissert., Columbia Univ.) the type Austin sequence (in vicinity of Austin, Williamson County, Texas) includes (ascending) Atco chalk, Bruceville chalk-marl, Vinson chalk, Jonah limestone, Dessau chalk, Burditt chalk marl, and Big House chalk. Intertongues with the lower part of Vinson chalk in the type Austin sequence. In vicinity of Waco, Texas, the Bruceville overlies Atco chalk and underlies a disconformity at base of Dessau chalk. In vicinity of Dallas, Texas, the Bruceville overlies Atco and underlies Hutchins chalk. At Dallas = middle marl member of Dallas Geological Society. Age is Late Cretaceous (Gulfian; Austinian).
Source: Publication; US geologic names lexicon (USGS Bull. 1350, p. 95-96); GNU records (USGS DDS-6; Denver GNULEX).
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 ([ ]).