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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Wise Lake Formation
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Wisconsin arch
Publication:

Sloan, R.E., 1987, Tectonics, biostratigraphy, and lithostratigraphy of the Middle and Late Ordovician of the Upper Mississippi Valley, IN Sloan, R.E., ed., Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations, no. 35, p. 7-20.


Summary:

Wise Lake Formation of Galena Group. Stratigraphically restricted in Minnesota; Stewartville Member is revised to Stewartville Formation. The Stewartville includes (ascending) Sinsinawa and Rifle Hill (new) members. In Illinois and Iowa, Stewartville Member is replaced with Rifle Hill Member. Age is Late Ordovician (Edenian). Report includes correlation chart, cross sections, graphic section. [See also entries under Rifle Hill and Stewartville.]

Source: Modified from GNU records (USGS DDS-6; Reston GNULEX, Denver GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).