Usage:
/Tarantula Gravel (TX)
[Preoccupied. Name previously applied to Tarantula Formation of Huffington (1947) in west TX.]
Geologic age:
Tertiary
Type section, locality, area and/or origin of name:
Type section: a composite of 3 measured sections (M81, M82, and M83). Named from Tarantula Hills, Jeff Davis Co., southwestern TX (DeFord and Bridges, 1959).
M81 (Lat. 30 deg. 36.1 min. N., Long. 104 deg. 47.8 min. W.) extends S. 50 deg. E. from its top at top of small hill to its base in a stream bed, adjacent to and south of main body of basalt in Rim Rock fault;
M82 (Lat. 30 deg. 37.3 min. N., Long. 104 deg. 50.4 min. W.) extends in northerly direction from its top at top a a small hill to base of a vertical exposure in stream bed, 100 feet southeast of county road (Porvenir mail route);
M83 (Lat. 30 deg. 35.8 min. N., Long. 104 deg. 49.6 min. W.) extends in westerly direction from top of long gentle slope to base of steep hill in middle of Tarantula Hills.
AAPG geologic province:
Permian basin
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 ([ ]).