- Usage in publication:
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- Dough Hills member
- Modifications:
-
- Original reference
- Dominant lithology:
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- Clay
- AAPG geologic province:
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- Gulf Coast basin
Summary:
Pg. 118 (fig. 26), 164-168, 174, geol. map. Dough Hills member of Fleming formation of Grand Gulf group. Consists primarily of a thick group of silty clays with calcareous beds near the center; lower beds are yellow silty clays carrying localized opaline nodules. Thickness 85 to 135 feet. Contact with underlying Carnahan Bayou member (new) arbitrarily taken as a tuffaceous clay bed which outcrops near center of NW/4 sec. 12, T. 4 N., R. 5 W.; contact with overlying Williamson Creek member (new) arbitrarily drawn on the appearance of numerous sand lentils in the clayey-silt sequence overlying the calcareous clay beds. Age is Miocene.
Crops out in Dough Hills, centrally located in T. 4 N., R. 4 and 5 W., Rapides Parish, central LA.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1148).
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 ([ ]).