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- Usage in publication:
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- Dederick shale member
- Modifications:
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- Original reference
- Dominant lithology:
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- Shale
- AAPG geologic province:
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- Cherokee basin
Summary:
Pg. 38-44. Dederick shale member of Cherokee formation. Chiefly dark blue to black shale containing upper Dederick, middle Dederick, and lower Dederick coal beds, and, locally, a coal bed at top. The coal beds are underlain by clay and locally sandstone, conglomerates, and ferruginous limestone appear at base. The black shale contains numerous thin bands and plates of dark, impure iron carbonate. Thickness 27 to 75 feet. Is basal member of Cherokee formation in Vernon County, western Missouri. Is overlain by Clear Creek sandstone member of Cherokee, and unconformably underlain by Mississippian rocks. Best exposures in vicinity of Dederick, along railroad in northern part of sec. 26, T. 36 N., R. 29 W., and in NE/4 SE/4 sec. 36, T. 36 N., R. 29 W. The name is not intended to apply to the Cherokee section outside of the area in southwestern Missouri. Age is Pennsylvanian.
Source: US geologic names lexicon (USGS Bull. 896, p. 584).
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 ([ ]).