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Geologic Unit: Argo
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Map showing publication footprint
  • Usage in publication:
    • Argo Gneiss
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Gneiss
  • AAPG geologic province:
    • Sioux uplift
Publication:

Griffin, W.L., and Morey, G.B., 1969, The geology of the Isaac Lake quadrangle, St. Louis County, Minnesota: Minnesota Geological Survey Special Publication Series, no. 8, 57 p., (incl. geologic map, scale 1:24,000)


Summary:

Pg. 12-13, geol. map. Argo Gneiss. Brown, fine- to medium-grained, massive to thin-bedded gneiss. Overlies gneiss of Knife Lake Group in south and Ely Greenstone elsewhere. Age is Precambrian W.
Type locality: exposures in roadcuts 0.8 km west of Argo Cemetery on St. Louis County Highway 21, central Isaac Lake quadrangle, north-central MN.

Source: US geologic names lexicon (USGS Bull. 1520, p. 12).


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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