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National Geologic Map Database

Geologic Unit: Boquillas

Usage:

Boquillas Formation (NM,TX*)
Boquillas Formation of Terlingua Group (TX)


Subunits:

(alphabetical) --all in TX: Dry Tank Member, Ernst Member, Fizzle Flat Member, Langtry Member, Rock Pens Member*, San Vicente Member.


Geologic age:

Late Cretaceous (Cenomanian to Coniacian)*


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

Named from Boquillas, on Tornillo Creek, Chisos Mountains quadrangle, Brewster Co., western TX (US geologic names lexicons, USGS Bull. 896, 1200).


AAPG geologic province:

Orogrande basin*
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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).