Usage:
Davidson Evaporite (MT?,ND?,SD?)
Uncertain if this unit extends into the U.S. Davidson Evaporite of Manitoba Group is recognized in the Williston basin of Canada.
Geologic age:
Devonian
Type section, locality, area and/or origin of name: (See Canadian Lexicon)
Type section (subsurface): depth-interval 3,830 to 4,100 ft, Imperial Davidson No. 1 well, LSD 16-8-27-1 West of 3rd Meridian (W3M), Saskatchewan, Canada (Baillie, 1953).
AAPG geologic province:
Williston 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 ([ ]).