U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Strathclair Formation
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Williston basin
Publication:

Megathan, E.R., 1987, Silurian Interlake Group; a sequence of cyclic marine and freshwater carbonate deposits in the central Williston basin, IN Fischer, D.W., ed., Fifth international Williston basin symposium; core workshop volume: North Dakota Geological Survey Miscellaneous Series, 5th International Williston Basin Symposium, Grand Forks, ND, June 14-17, 1987, no. 69, p. 59-88., Prepared in cooperation with North Dakota and Saskatchewan geol. societies


Summary:

Is the basal formation (of 8 formations) of Interlake Group extended into the subsurface of the central Williston basin of ND. Overlies Stonewall Formation of Bighorn Group. Underlies Fife Lake Formation of Interlake Group. Only part of core of formation interval described. [Total thickness in report area not stated.] History of nomenclature chart. Silurian age.

Source: GNU records (USGS DDS-6; Denver GNULEX).


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 ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 04 Apr 2024 04:10:08 PM MDT