May Creek Schist

Layered amphibolite, schist, gneiss, and quartzite. Protolith considered to be of Paleozoic age
State Oregon
Name May Creek Schist
Geologic age Paleozoic(?) to Jurassic
Lithologic constituents
Metamorphic > Schist (Amphibolite)Includes quartz-biotite schist and quartzofeldspathic schist
Metamorphic > Amphibolite (Amphibolite)Includes amphibole schist, metaporphyry, metadiorite, and metagabbro
Metamorphic > Metasedimentary > Metaclastic > Quartzite (Amphibolite)
Comments Unit consists of a structurally higher subunit of metasedimentary rocks (May Creek Schist) and a structurally lower subunit of amphibolite as mapped by Irwin (1994).

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

Irwin, W.P., 1994, Geologic map of the Klamath Mountains, California and Oregon: U.S. Geological Survey Miscellaneous Investigations Series Map I-2148, scale 1:500,000.

Donato, M.M., 1992, Geologic guide for the northern Klamath Mountains--part 2, Red Mountain to Bald Mountain (May Creek Schist and related rocks): Oregon Geology, v. 54, no. 2, p. 34-39.

NGMDB product
Counties Douglas - Jackson - Josephine