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Stockbridge Formation

Stockbridge Formation - Beige, tan, and dark-gray weathering quartzose dolomite marble containing interbeds of black, green and maroon phyllite and punky weathering blue quartz pebble quartzite.
StateMassachusetts
NameStockbridge Formation
Geologic ageLower Cambrian
Original map labelEsb
CommentsPart of Taconic-Berkshire Zone (Ordovician and Older Rocks)
Primary rock typemarble
Secondary rock typephyllite
Other rock typesquartzite
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metacarbonate > Marblequartzose dolomite marble
Incidental
Metamorphic > Metasedimentary > Metaclastic > Quartzitepunky weathering blue quartz pebble quartzite
Metamorphic > Metasedimentary > Metaclastic > Phyllite
Map references
Unpublished Digital Geologic Map of Massachusetts received from Rudi Hon at Boston College in 1998.
Unit references
Zen, E-An (ed.), Goldsmith, R. (comp.), Ratcliffe, N.M. (comp.), Robinson, P. (comp.), Stanley, R.S. (comp.), Hatch, N.L., Jr., Shride, A.F., Weed, E.G.A., Wones, D.R., 1983, Bedrock Geologic Map of Massachusetts: U.S. Geological Survey, Reston, VA, scale 1: 250,000.
Geographic coverageBerkshire

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