Usage:
Lehman Ridge Gravel (CO*)
Geologic age:
Quaternary*
Pleistocene*
Type section, locality, area and/or origin of name:
Lehman Ridge, from which unit is named, about 2,500 ft east of cadet academic area, U.S. Air Force Academy site, El Paso Co., CO (Varnes and Scott, 1967).
AAPG geologic province:
Denver 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 ([ ]).