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National Geologic Map Database

NGMDB

Geologic Unit: Trenton

Usage:

Trenton Formation (MI,NY,VT)
Trenton Group (KY,MI,NY*,PA*,VT*,VA*,WV*)
Trenton Limestone (GA*,IL*,IN*,KY*,MI*,NY*,OH*,PA*,TN*,VA*,WV)
Trenton Limestone of Chickamauga Group (TN)
Trenton Member of Martinsburg Formation (VA)


Subunits:

GROUP STATUS (alphabetical): Amsterdam Limestone (NY,VT), Antes Shale (PA,WV*), [†?]Canajoharie Shale (NY*), Chambersburg Limestone (WV), Chandler Falls Formation (MI), Coburn Formation (PA*), Cumberland Head Formation (NY,VT), Curdsville Limestone (KY), Denley Limestone (NY), Dolly Ridge Formation (VA*,WV*), Edinburg Formation (WV), Eggleston Formation (WV), Glens Falls Limestone (NY*,VT*), Hathaway Formation (VT), Hillier Limestone (NY), Hortonville Slate (VT*) or Hortonville Formation (VT), Iberville Formation (VT) or Iberville Shale (VT), Kings Falls Limestone (NY), Kirkfield Formation (NY) or Kirkfield Limestone (NY), Moccasin Limestone (WV), Napanee Limestone (NY), Nealmont Limestone (VA*,WV*) or Nealmont Formation (PA*,WV), Orwell Limestone (VT*), Rockland Limestone (NY), Salona Formation (PA*) or Salona Limestone (PA), Sherman Fall Formation (NY), Shoreham Formation (NY) or Shoreham Limestone (VT), Steuben Limestone (NY), Stony Point Shale (NY,VT) or Stony Point Formation (VT), Sugar River Limestone (NY).

FORMATION STATUS (alphabetical) --all in MI: Chandler Falls Member, Groos Quarry Member, Haymeadow Creek Member.


Geologic age:

Ordovician, Late*
Ordovician, Middle*


Type section, locality, area and/or origin of name:

Trenton Falls, Oneida Co., NY (Vanuxem, 1838).


AAPG geologic province:

Appalachian basin*
New England province*
Michigan basin*
Illinois basin*
Cincinnati arch*


NGMDB

For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).

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Page Last Modified: Tue Jun 3 16:32:29 2014