Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Connecticut
|Geologic age||Lower Ordovician or Cambrian or both|
|Original map label||OCr|
|Comments||Part of Central Lowlands; Iapetus (Oceanic) Terrane - Connecticut Valley Synclinorium; Hartland Belt|
|Primary rock type||schist|
|Secondary rock type||granofels|
|Other rock types||amphibolite; calc-silicate rock|
Metamorphic > SchistLight-gray to silvery, fine- to medium-grained, generally poorly layered schist, composed of quartz, muscovite, biotite, oligoclase, and generally garnet, staurolite, and kyanite or sillimanite.
Metamorphic > Granoblastic > Granofels
Metamorphic > Metasedimentary > Calc-silicate-rockquartz-spessartine rock (coticule), and calc-silicate rock.
Metamorphic > Amphibolite
Connecticut Geological and Natural History Survey, DEP, in cooperation with the U.S. Geological Survey, 2000, Bedrock Geology of Connecticut, data format: shapefile, file name: bedrock, downloaded from: http://magic.lib.uconn.edu/cgi-bin/MAGIC_DBsearch2.pl?Geography=37800&Loc=0000 on 9/18/2003, scale 1:50,000.
Rodgers, John, compiler, 1985, Bedrock Geological Map of Connecticut: Connecticut Geological and Natural History Survey, Hartford, Connecticut, 2 sheets, scale 125,000.
|Geographic coverage||Fairfield - Hartford - Litchfield - New Haven|
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