Usage:
Glen Rose Formation of Trinity Group (TX*)
Glen Rose Limestone of Trinity Group (TX*-notably exposed in Brewster Co.)
Glen Rose Formation of Atascosa Group (TX-subsurface)
Glen Rose Limestone Member of Shingle Hills Formation of Trinity Group (TX)
Glen Rose Group (LA)
Subunits:
GROUP STATUS (ascending) --in LA subsurface: Pearsall Formation (Bexar Shale, James Limestone, Pine Island Shale Members), Rodessa Formation (Jeter Member), Ferry Lake Anhydrite, Mooringsport Limestone.
FORMATION STATUS (alphabetical) --all in TX: Ferry Lake Member, Hensell Sand Member, Pine Island Member, Rodessa Member, Thorp Springs Member.
Geologic age:
late Early Cretaceous (Albian)*
Type section, locality, area and/or origin of name:
Named from Glen Rose, Somervell Co., TX (US geologic names lexicons, USGS Bull. 896, 1200).
AAPG geologic province:
Arkla basin
Bend arch*
Fort Worth syncline*
Gulf Coast basin*
Kerr basin*
Llano uplift*
Ouachita folded belt*
Permian basin*
Strawn 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 ([ ]).