Usage:
Montezuma Valley Member of Mancos Shale (CO*)
Geologic age:
Late Cretaceous (Turonian)*
Type section, locality, area and/or origin of name:
Type section: exposed on both sides of the Mesa Verde National Park aqueduct and along an unimproved service road, in SE/4 sec. 31, T. 36 N., R. 14 W., [approx. Lat. 37 deg. 19 min. 52 sec. N., Long. 108 deg. 25 min. 56 sec. W.], near northern entrance to Mesa Verde National Park, Point Lookout 7.5-min quadrangle, Montezuma Co., southwestern CO. [Named from Montezuma Valley, north of Mesa Verde National Park.] (Leckie and others, 1997).
AAPG geologic province:
Paradox basin*
San Juan 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 ([ ]).