- Usage in publication:
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- Silver Cliff Member
- Modifications:
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- Principal reference
- Dominant lithology:
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- Till
- AAPG geologic province:
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- Wisconsin arch
Summary:
Following the informal usage of McCartney (1979), the Silver Cliff Member of the Kewaunee Formation is here named on the west side of the Green Bay Lobe in WI. It consists of reddish-brown sand-silt-clay till and is thin, discontinuous and poorly exposed. Unconformably overlies pre-Pleistocene bedrock or older till of the Horicon Formation; unconformably underlies the Kirby Lake or Middle Inlet Members of the Kewaunee, or is the surface unit. Its contact with the equivalent Branch River Member of the Kewaunee on the east side of the Green Bay Lobe is an arbitrary vertical contact at the Fox River. Thickness at type section is 2 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 ( ).
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