|Geologic age||Paleozoic or Mesozoic|
Metamorphic > Schist > Pelitic-schist (Greenschist)Pelitic schist transitional between greenschist and blueschist grade
Metamorphic > Metaigneous > Metavolcanic > MetabasaltIncludes metamorphosed pillow lavas, breccias, and pyroclastic rocks
Sedimentary > Chemical > Chert (Bed)
|Comments||Considered part of Pickett Peak Terrane by Blake and others (1985).|
Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000.
Coleman, R.G., 1972, The Colebrooke Schist of southwestern Oregon and its relation to the tectonic evolution of the region: U.S. Geological Survey Bulletin 1972, 61 p.
Blake, M.C., Jr., Engebretson, D.C., Jayko, A.S., and Jones, D.L., 1985, Tectonostratigraphic terranes in southwest Oregon, in Howell, D.G., ed., Tectonostratigraphic terranes of the circum-Pacific region: Circum-Pacific Council for Energy and Mineral Resources Earth Science Series, v. 1, p. 147-158.
Dott, R.H., Jr., 1971, Geology of the southwestern Oregon coast west of the 124th meridian: Oregon Department of Geology and Mineral Industries Bulletin 69, 63 p.