U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Canyon

Usage:

Canyon Group (TX*)


Subunits:

(alphabetical) --all in TX: Adams Branch Limestone, Brad Formation*, Brookesmith Formation, Brownwood Shale, Caddo Creek Formation*, Cedarton Shale, Chico Ridge Limestone, Colony Creek Shale, Graford Formation, Home Creek Limestone, Jasper Creek Formation, Kisinger Sandstone [unranked], Palo Pinto Formation, Placid Shale, Posideon Formation, Ranger Limestone, Rochelle Conglomerate, Seaman Ranch Shale, Staff Limestone, Ventioner Formation, Willow Point Formation, Winchell Limestone, Wolf Mountain Shale.


Geologic age:

Late Pennsylvanian (Missourian)*


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

Type area: Palo Pinto Co., TX. Named from town of Canyon, on Texas and Pacific RR, western Palo Pinto Co., TX (US geologic names lexicons, USGS Bull. 896, 1200).


AAPG geologic province:

Bend arch*
Fort Worth syncline


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 ([ ]).