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National Geologic Map Database

Geologic Unit: Lewisville

Usage:

Lewisville Formation of Woodbine Group (LA?,TX)
Lewisville Member of Woodbine Formation (OK,TX*)


Geologic age:

early Late Cretaceous (Cenomanian)*


Type section, locality, area and/or origin of name:

Named from exposures at Lewisville, Denton Co., northeastern TX (Hill, 1901).
Type area: Timber Creek from point about 2 mi south of center of Lewisville, Denton Co., upstream to point about 3 mi southwest of center of Lewisville and about 1 mi above crossing of road to Shiloh Church (Stephenson, 1952; see also Davis and others, 1970).
Reference locality: stream valley just east of Farm Road 157, south of bridge across Trinity River; [east of N. Collins Ave. (Farm Road 157) near intersection with Brown Blvd., in vicinity of Lat. 32 deg. 46 min. 30 sec. N., Long. 97 deg. 05 min. 48 sec. W., Euless 7.5-min quadrangle (ca. 2000 ed.), eastern Tarrant Co., north-central TX] (see Davis and others, 1970).


AAPG geologic province:

Fort Worth syncline*
Strawn basin*
Ouachita folded belt*
South Oklahoma folded belt*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).