Geologic Unit: Shadow Lake
Shadow Lake Formation (PA)
Type Locality: (See Canadian Lexicon)
Exposures in Shadow Lake quarry and roadcut near Coboconk, Ontario, Canada (Okulitch, 1939).
Unit Name History:
Named in Canada (Okulitch, 1939).
Extended into PA (Berg and others, 1980).
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U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
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Last modified: 15-Jan-2013