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- Usage in publication:
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- Springhill Pond Formation
- Modifications:
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- Named
- Dominant lithology:
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- Gneiss
- Quartzite
- Marble
- AAPG geologic province:
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- Adirondack uplift
Summary:
The informal Springhill Pond Formation of Walton and deWaard (1963) is here used and assigned to the Lake George Group in the eastern Adirondacks in NY. It consists of garnet-sillimanite gneiss, quartzite, and marble. Alling (1917) divided the sequence, from base to top, into tentative units: Hague gneiss, Dixon schist, Faxon limestone, Swede Pond quartzite, (Bryant Lake) limestone, Catamount sillimanite schist, Bear Pond schist. Structurally overlies the Lake Durant Formation; structurally underlies the Thunderbolt Mountain Formation, both of the Lake George Group. Correlates with the Blue Mountain Lake Formation of the central Adirondacks. Age is Proterozoic.
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 ([ ]).