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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Athelstane Quartz Monzonite*
  • Modifications:
    • Geochronologic dating
  • AAPG geologic province:
    • Lake Superior region
Publication:

Sims, P.K. (compiler), 1990, Geologic map of Precambrian rocks of Iron Mountain and Escanaba 1 degree x 2 degrees quadrangles, northeastern Wisconsin and northwestern Michigan: U.S. Geological Survey Miscellaneous Investigations Series Map, I-2056, 1 sheet, scale 1:250,000


Summary:

Athelstane Quartz Monzonite. U-Pb zircon age 1,836 +/-15 Ma (Early Proterozoic). Age recalculated from Banks and Cain (1969). Sample locality in sec. 30, T. 33 N., R. 20 E., Marinette Co., WI.

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

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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