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Rowe Schist

Rowe Schist - Fine- to medium-grained, well-layered and foliated amphibolite; epidote-rich layers locally abundant. Includes its typical Chester Amphibolite Member at Chester, Massachusetts.
StateMassachusetts
NameRowe Schist
Geologic ageLower Ordovician and Cambrian
Original map labelOEra
CommentsPart of Rowe-Hawley Zone (Ordovician and Older Rocks) Despite uncertainties, age of Rowe is probably only slightly, if at all, older than earliest Cambrian and almost certainly no younger than Early or possibly Middle Ordovician (Stanley and Hatch, 1988) per MA014.
Primary rock typeamphibolite
Secondary rock type
Other rock types
Lithologic constituents
Major
Metamorphic > AmphiboliteFine- to medium-grained, well-layered and foliated amphibolite; epidote-rich layers locally abundant.
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Unpublished Digital Geologic Map of Massachusetts received from Rudi Hon at Boston College in 1998.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.
Stanley, R.F. and Hatch, N.L., Jr., 1988, The pre-Silurian geology of the Rowe-Hawley zone, Chapter A, IN Hatch, N.L., Jr., ed., The bedrock geology of Massachusetts: U.S. Geological Survey Professional Paper, 1366-A, 39 p.
Geographic coverageBerkshire - Franklin - Hampden - Hampshire

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