Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Vermont
|Original map label||Sc|
|Comments||Part of Eastern Vermont Secondary unit description from USGS Geologic Names lexicon (ref. VT030)4:40:01 PM Clough is considered the key stratigraphic unit in Bronson Hill anticlinorium because 1) it is dominated by distinctive, readily recognizable rock types, 2) where present, it is base of Silurian-Devonian sequence, resting with detectable unconformity on older rocks, and 3) it contains late Llandoverian fossils at several localities in western NH and adjacent VT, and at Bernardston, MA. Consists mostly of quartz-pebble conglomerate in which pebbles are typically deformed; other lithologies are quartz grit or white to pink, well-bedded quartzite. Locally contains some mica schist beds.|
|Primary rock type||conglomerate|
|Secondary rock type||quartzite|
|Other rock types||mica schist|
Sedimentary > Clastic > Conglomeratequartz-conglomerate
Metamorphic > Metasedimentary > Metaclastic > Quartzitequartzite; lenses of fossiliferous calcareous quartzite in upper part
Metamorphic > Schist > Mica-schistmica schist
Nicholson, S.W., Dicken, C.L., Horton, J.D., Foose, M.P., Mueller, J.A.L., and Hon, Rudi, 2006, Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, and Vermont: U.S. Geological Survey Open-File Report 2006-1272.
Doll, C.G., Cady, W.M., Thompson, J.B., Jr., and Billings, M.P., 1961, Centennial Geologic Map of Vermont: Vermont Geological Survey, Miscellaneous Map MISCMAP-01, scale 1:250,000.
|Geographic coverage||Essex - Windham - Windsor|
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