U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Mulky
Search archives
Map showing publication footprint
  • Usage in publication:
    • Mulky Coal Member
  • Modifications:
    • Areal extent
    • Revised
  • AAPG geologic province:
    • Iowa shelf
Publication:

Ravn, R.L., Swade, J.W., Howes, M.R., Gregory, J.T., Anderson, R.R., and Van Dorpe, P.E., 1984, Stratigraphy of the Cherokee Group and revision of Pennsylvanian stratigraphic nomenclature in Iowa: Iowa Geological Survey Bureau Technical Information Series, no. 12.


Summary:

Extended into the Iowa shelf, IA from MO as the uppermost member of the newly named Swede Hollow Formation of Cherokee Group of Des Moines Supergroup. Overlies unnamed gray shale of Swede Hollow. Underlies the newly named Mouse Creek Formation of Marmaton Group of Des Moines Supergroup. Is very thin. Sporadic in occurrence. Occurs as a smut at some localities, especially in the subsurface. Nomenclature chart. Cross section. Of Desmoinesian, Pennsylvanian 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 04:03:43 PM MDT