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National Geologic Map Database

Geologic Unit: Dawson Bay

Usage:

Dawson Bay Formation (MT*,ND*,SD*)


Geologic age:

late Middle Devonian (Givetian)*


Type section, locality, area and/or origin of name: (See Canadian Lexicon)

Type area: Dawson Bay, north end of Lake Winnipegosis, Manitoba, Canada (Baillie, 1953).
Composite section measured in T. 44 and 45 N., R. 25 W. (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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).