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Geologic Unit: Wills
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  • Usage in publication:
    • Wills granite
  • Modifications:
    • First used
  • Dominant lithology:
    • [Granite]
  • AAPG geologic province:
    • Midcontinent region
Publication:

Hayes, W.C. (chairman), 1961, Guidebook to the geology of the St. Francois Mountain area: Missouri Division of Geological Survey and Water Resources Report of Investigations, no. 26, 137 p.


Summary:

Pg. 22. Wills granite. Mentioned in road log from Roselle to Mine LaMotte. In contact with Stouts Creek rhyolite. Age is Precambrian.
Occurs in St. Francois Mountain area. Wills Branch flows from St. Francois Co. into Madison Co., southeastern MO.

Source: US geologic names lexicon (USGS Bull. 1350, p. 833).


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 ([ ]).

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