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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Tibbit Hill Volcanic Member*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • New England province
Publication:

Rankin, D.W., 1976, Appalachian salients and recesses; late Precambrian continental breakup and the opening of the Iapetus Ocean: Journal of Geophysical Research, B, Solid Earth and Planets, v. 81, no. 32, p. 5605-5619.


Summary:

Author follows usage of Cady (1969): Tibbit Hill Volcanic Member of Pinnacle Formation of Camels Hump Group. Age is Early Cambrian(?).

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Tibbit Hill Volcanic Member*
  • Modifications:
    • Age modified
    • Geochronologic dating
  • AAPG geologic province:
    • New England province
Publication:

Rankin, D.W., 1994, Continental margin of the eastern United States; past and present, IN Speed, R.C., ed., Phanerozoic evolution of North American continent-ocean transitions: Geological Society of America, The Decade of North American Geology (DNAG), Continent-Ocean Transect Series, p. 129-218.


Summary:

Author uses zircon age of 554 Ma (Early Cambrian) determined by Kumarapeli and others (1989, Canadian Journal of Earth Sciences, v. 26).

Source: GNU records (USGS DDS-6; Reston 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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