Usage:
Thunderbird Group (TX)
Subunits:
(alphabetical) --all in TX: Coronado Hills Conglomerate, Smugglers Pass Formation, Tom Mays Park Formation.
Geologic age:
Mesoproterozoic
Type section, locality, area and/or origin of name:
Exposure about 3,000 ft northeast of Smugglers Pass in Fusselman Canyon, southern Franklin Mountains, Lat. 31 deg. 53 min. 06 sec. N., Long. 106 deg. 29 min. 34 sec. W., El Paso Co., TX. Named from Thunderbird Mountain on southwest flank of South Franklin Mountain (Thomann, 1981).
AAPG geologic province:
Southwestern Basin-and-Range region
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 ([ ]).