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Sedimentary and volcanic rocks, partly metamorphosed (Paleozoic)

Undifferentiated sedimentary and volcanic rocks some of which are highly deformed and locally metamorphosed to amphibolite and schist. Occurs mostly in Strawberry and Aldrich Mountains of the Blue Mountains province. Includes undivided Paleozoic rocks and Paleozoic volcanic rocks of Brown and Thayer (1966) and Dixie Butte Meta-andesite of Brooks and others (1984)
StateOregon
NameSedimentary and volcanic rocks, partly metamorphosed (Paleozoic)
Geologic agePaleozoic
Original map labelPzsv
CommentsThe southwest quarter of the Bates 15' quadrangle (OR092) was renamed "Dixie Butte" quadrangle.
Primary rock typeandesite
Secondary rock typeintermediate metavolcanic rock
Other rock types
Lithologic constituents
Major
Sedimentary > Clastic > Mixed-clastic (Bed)No lithologies provided
Minor
Metamorphic > Metasedimentary (Greenschist)
Metamorphic > Greenstone (Greenschist)Includes Dixie Butte Meta-andesite (OR092)
Map references
Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000.
Unit references
Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000.
Brown, C.E. and Thayer, T.P., 1966, Geologic map of the Canyon City quadrangle, northeastern Oregon: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-447, scale 1:250,000.
Walker, G.W., 1977, Geologic map of Oregon east of the 121st meridian: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-902, scale 1:500,000.
Brooks, H.C., Ferns, M.L., and Avery, D.C., 1984, Geology and gold deposits map of the southwest quarter of the Bates quadrangle, Grant County, Oregon: Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series GMS-35, scale 1:24,000- Department of Geology and Mineral Industries Geologic Map Series GMS-35, scale 1:24,000.
Brooks, H.C., Ferns, M.L., and Avery, D.G., 1984, Geology and gold deposits of the southwest quarter of the Bates quadrangle, Grant County, Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series GMS-35, scale 1:24,000.
Ferns, M.L., Brooks, H.C., and Wheeler, G.R., 1984, Geology and gold deposits of the Bates quadrangle, Grant County, Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series GMS-31, scale 1:24,000.
Thayer, T.P., Brown, C.E., and Hay, R.I., 1967, Preliminary geologic map of the Prairie City quadrangle, Grant County, Oregon: U.S. Geological Survey Open-File Map, scale 1:62,500.
Geographic coverageGrant - Wheeler

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