Geologic Unit: Frontenac
Frontenac Formation (ME*,NH*,VT*)
Type Locality: (See Canadian Lexicon)
Type area: Mount Megantic, Frontenac Co., Quebec, Canada (McGerrigle, 1935).
Canada Falls Member (ME)
Unit Name History:
Named (H.W. McGerrigle, 1935, Quebec Bur. Mines, Rpt. Minister Mines 1934-35, pt. D, p. 71, 74-78) [From US geologic names lexicon, USGS Bull. 896; synopsis not included here].
Overview in ME (Marvinney, 1994).
Revised; Extended into VT; Age modified; Biostratigraphic dating; Isotopic dating (Moench and others, 1995).
NH State Geol. Map usage; Extended into NH; Age modified; Isotopic dating (Lyons and others, 1997).
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Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.
"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().
Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).
U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
Database project personnel
Last modified: 15-Jan-2013