Otter Point Formation of Dott (1971) and related rocks (Upper Jurassic) (ORJop;0)

State	Oregon
Name	Otter Point Formation of Dott (1971) and related rocks (Upper Jurassic)
Geologic age	Late Jurassic
Original map label	Jop
Comments	Considered part of the Gold Beach Terrane by Blake and others (1985).
Primary rock type	graywacke
Secondary rock type	mudstone
Other rock types	conglomerate; greenstone; limestone; chert; blueschist; serpentinite
Lithologic constituents	Major Sedimentary > Clastic > Mudstone (Bed) Sedimentary > Clastic > Sandstone > Graywacke (Bed)Graywacke contains abundant volcanic detritus Minor Sedimentary > Clastic > Conglomerate Incidental Sedimentary > Chemical > Chert Sedimentary > Carbonate > Limestone Metamorphic > Schist (Glaucophane-schist) Metamorphic > Serpentinite Metamorphic > Greenstone
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. 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. [http://pubs.er.usgs.gov/publication/b1972] 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. Koch, J.G., 1966, Late Mesozoic stratigraphy and teconic history, Port Orford-Gold Beach area, southwestern Oregon coast: American Association of Petroleum Geologists Bulletin, v. 50, p. 25-71.
Geographic coverage	Coos - Curry - Douglas