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Melange of Dutchmans Peak

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Heterogeneous mixture of interlayered metasedimentary and metavolcanic rocks metamorphosed to upper greenschist and (or) almandine-amphibolite facies, and serpentinite, gabbro, and metagabbro (Smith and others, 1982)
State Oregon
Name Melange of Dutchmans Peak
Geologic age Paleozoic(?) to Jurassic(?)
Lithologic constituents
Major
Metamorphic > Metasedimentary (Amphibolite)Blocks in melange
Metamorphic > Metaigneous > Serpentinite
Metamorphic > Metaigneous > Metavolcanic (Amphibolite)Blocks in melange
Incidental
Igneous > Plutonic > Gabbroic > Gabbro
Comments Considered part of Rattlesnake Creek Terrane by Irwin (1994)
References

Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000.
NGMDB product
Counties Jackson