- Usage in publication:
-
- Liberty Grove Member
- Modifications:
-
- Named
- Dominant lithology:
-
- Till
- AAPG geologic province:
-
- Wisconsin arch
Summary:
Following the informal usage of Schneider (1981), the Liberty Grove Member of the Horicon Formation is here named on the eastern side of the Green Bay Lobe in Door Co., WI. It consists of brown to yellowish-brown, coarse-grained, pebbly sandy loam till. Where it rests directly on bedrock, most of the clasts are Silurian dolomite. Lies at the surface or underlies the Kewaunee Formation. Correlates with the Mapleview Member of the Horicon on the west side of the Green Bay Lobe. Thickness ranges from less than 3 m to more than 10 m. Age is Pleistocene (late Wisconsinan).
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Liberty Grove Member
- Modifications:
-
- Revised
- Dominant lithology:
-
- Till
- AAPG geologic province:
-
- Wisconsin arch
Summary:
App., p. 51, 52 (fig. A2). Liberty Grove Member of Holy Hill Formation. Previously defined as Liberty Grove Member of Horicon Formation (Mickelson and others, 1984). Occurs locally on eastern edge of the Green Bay Lobe, easternmost Wisconsin. [Age of Holy Hill Formation is Pleistocene (late Wisconsinan, approximately 18,000 to 13,000 yr B.P.), based on stratigraphic relations.]
Source: Publication.
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 ([ ]).