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Geologic Unit: Beekmantown

Usage:

Beekmantown Dolomite (NY*,PA*,VA*,WV)
Beekmantown Limestone (MD*,NY*,PA*,VA*)
Beekmantown Shale (NY*,VT*)
Beekmantown Formation (VA)
Beekmantown Dolomite of Knox Group (VA*,WV)
Beekmantown Group (MD*,NJ*,NY*,OH*,PA*,VT*,VA*,WV*)
Beekmantown Group of Kittatinny Supergroup (NJ*,PA*)
Beekmantown Group of Knox Supergroup (OH)
Beekmantown Formation of Knox Group (VA)


Subunits:

GROUP STATUS (alphabetical): Axemann Limestone (PA*), Axemann Formation (PA), Bascom Formation (VT*), Beldens Formation (VT*), Bellefonte Dolomite (PA*), Bellefonte Formation (PA), Bridport Dolomite (NY), Chepultepec Dolomite (TN, OH, KY), Chipman Formation (VT*), Chuctanunda Creek (NY), Cutting Dolomite (VT*), Cutting Formation (VT), Epler Formation (PA*,NJ*), Fort Ann Formation NY), Fort Cassin Formation (VT,NY), Great Meadow Formation (NY), Hastings Creek Limestone (VT), Highgate Formation (VT), Larke Dolomite (PA*,NY), Larke Formation (PA,WV), Luke Hill Limestone (VT), Morgan Corners Formation (VT), Naylor Ledge Limestone (VT), Nittany Dolomite (PA*,MD*), Ogdensburg Dolomite (NY), Ontelaunee Formation (PA*), Pinesburg Station Dolomite (MD*,VA*,WV*), Pinesburg Station Formation (PA*), Potsdam Sandstone (NY), Providence Island Dolomite (VT), Rickenbach Dolomite (NJ*,PA*), Rickenbach Formation (NJ,PA), Rockdale Run Formation (MD*,PA*,VA*,WV*), Rose Run Sandstone (OH), Shelburne Formation (VT*), Spellman Formation (NY), Stonehenge Limestone (PA*,MD*,VA*,WV*,NJ*,NY*), Stonehenge Formation (PA*,NJ*,NY*), Stoufferstown Formation (PA), Strites Pond Formation (VT), Tribes Hill Formation (NY), Wallace Creek Formation (VT), Whitehall Formation (NY,VT), Whitehall Dolostone (VT).

FORMATION STATUS (alphabetical): Chepultepec Dolomite Member (VA), Kingsport Dolomite Member (VA), Longview Dolomite Member (VA), Mascot Dolomite Member (VA).


Geologic age:

Late Cambrian to Middle Ordovician*


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

Named from exposures at Beekmantown, Clinton Co., northeast corner of NY (US geologic names lexicons, USGS Bull. 896, 1200).
Reference section: begins at top of group in Potomac River bluff, about 1,000 ft west of intersection with southwest face of Pinesburg Station quarry, and continues westward along C&O Canal for 1 mi, Washington Co., MD (Sando, 1956).


AAPG geologic province:

New England province*
Appalachian basin*


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 15:58:17 2014