Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Vermont
|Name||Mount Holly Complex, calcite and dolomite marbles|
|Original map label||pCm|
|Comments||Part of Green Mountains Cores of abraded zircon obtained from College Hill Granite Gneiss of Mount Holly Complex have a U-Pb upper intercept age of 1245 +/-14 Ma, interpreted as crystallization age for that granite (Aleinikoff and others, 1990) per VT016.|
|Primary rock type||marble|
|Secondary rock type||granulite|
|Other rock types||metamorphic rock|
Metamorphic > Granuliteinterbedded with medium- to coarse-grained calc-silicate granulite
Metamorphic > Metasedimentary > Metacarbonate > Marblecalcite and dolomite marbles - locally coarse grained; commonly contain phlogopite, actinolite, and diopside
Metamorphicincludes minor amounts of other types of Precambrian rock
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||Bennington - Rutland - Windham - Windsor|
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