- Usage in publication:
-
- Cutoff Shaly member*
- Modifications:
-
- Named
- AAPG geologic province:
-
- Permian basin
Summary:
Pg. 569-570, pl. 2. Cutoff shaly member (of Bone Spring limestone). Consists of several hundred feet of buff, dove-gray, or black thin-bedded limestones and siliceous shales at top of formation. Assigned to the Bone Spring because, 2 miles north of Bone Spring, the beds are truncated and overlain unconformably by Delaware Mountain group. At type locality, overlies Victorio Peak gray member and the sandstone tongue of the Cherry Canyon formation; in other areas, underlies Brushy Canyon formation. Age is Permian (Leonard Series).
Type exposure: On west face of Cutoff Mountain near Texas-New Mexico line.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1020).
- Usage in publication:
-
- Cutoff shaly member*
- Modifications:
-
- Mapped 1:48k
- AAPG geologic province:
-
- Permian basin
Summary:
Pg. 16, 18, 24, pl. 3. Cutoff shaly member of Bone Spring limestone. Name Cutoff shaly member given to discontinuous sets of beds at top of Bone Spring limestone exposed in three general districts: area from which it is named; Shumard Canyon, where it is separable into two divisions; and along base of Delaware Mountains. Mapped in New Mexico.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1020).
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 ([ ]).