U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Missouri Breaks

Usage:

Missouri Breaks Formation of Interlake Group (MT?,ND)


Geologic age:

Silurian


Type section, locality, area and/or origin of name:

Type section (subsurface): depth-interval from 11,778 to 11,805 ft, Texaco Inc. No. 1 Missouri Breaks well, in SW/4 SE/4 sec. 10, T. 153 N., R. 96 W., McKenzie Co., ND (Megathan, 1987).


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 ([ ]).