Myrtle Group (Lower Cretaceous and Upper Jurassic) (ORKJm;0)

State	Oregon
Name	Myrtle Group (Lower Cretaceous and Upper Jurassic)
Geologic age	Late Jurassic to Early Cretaceous
Original map label	KJm
Comments	Part of Snow Camp Terrane of Blake and others (1985)
Primary rock type	siltstone
Secondary rock type	sandstone
Other rock types	conglomerate; limestone
Lithologic constituents	Major Sedimentary > Clastic > Sandstone (Bed) Sedimentary > Clastic > Siltstone (Bed) Minor Sedimentary > Clastic > Conglomerate (Bed) Incidental Sedimentary > Carbonate > Limestone (Lens)
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. 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. Imlay, R.W., Dole, H.M., Wells, F.G., and Peck, D., 1959, Relations of certain Upper Jurassic and Lower Cretaceous formations in southwestern Oregon: American Association of Petroleum Geologists Bulletin, v. 43, p. 2770-2785. Jones, D.L., 1969, Buchia zonation in the Myrtle Group, southwest Oregon [abs.]: Geological Society of America Abstracts with Programs, Cordilleran Section Meeting, 65th, Eugene, Oregon, pt. 3, p. 31-32.
Geographic coverage	Coos - Curry - Douglas