- Usage in publication:
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- Nashville Member
- Modifications:
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- Named
- Dominant lithology:
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- Till
- AAPG geologic province:
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- Wisconsin arch
Summary:
Following the informal usage of Simpkins (1979), the Nashville Member of the Copper Falls Formation is here named in the Chippewa Sublobe in Forest, Langlade, and Oneida Counties, WI. It consists of reddish-brown, yellowish-red, and dark-brown pebbly, sandy loam till containing sand lenses. Sharply overlies the Marathon and Lincoln Formations and overlies and intertongues with the stratigraphically equivalent Mapleview Member of the Horicon Formation; sharply underlies sand and gravel of the Copper Falls Formation or is the surface unit. Thickness ranges from 2 to 17 m. Age is Pleistocene (late Wisconsinan).
Source: GNU records (USGS DDS-6; Reston 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 ([ ]).