| State | Oregon |
|---|---|
| Name | Volcanic rocks of the Dothan Formation and related rocks |
| Geologic age | Late Jurassic to Early Cretaceous |
| Lithologic constituents | Major
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow-pillows, Volcaniclastic-volcanic breccia)
|
| Comments | Considered part of the Yolla Bolly Terrane by Blake and others (1985), which includes part of the Franciscan Complex in California. |
| 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.https://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.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.https://pubs.er.usgs.gov/publication/i2148 Smith, J.G., Page, N.J, Johnson, M.G., Moring, B.C., and Gray, F., 1982, Preliminary geologic map of the Medford 1ø by 2ø quadrangle, Oregon and California: U.S. Geological Survey Open-File Report 82-955, scale 1:250,000.https://pubs.er.usgs.gov/publication/ofr82955 |
| NGMDB product | |
| Counties | Curry - Douglas - Josephine |