| State | Oregon |
|---|---|
| Name | Shale, mudstone, and sandstone |
| Geologic age | Late Jurassic |
| Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone (Bed)Commonly metamorphosed to slate or phyllite
Sedimentary > Clastic > Sandstone > Graywacke (Bed)
Incidental
Sedimentary > Clastic > Conglomerate (Bed)
Sedimentary > Chemical > Chert (Bed)Present in basal part of unit
|
| Comments | Unit is correlative with and lithologically similar to the Galice Formation. |
| References | 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.https://pubs.er.usgs.gov/publication/i2148 Harper, G.D., 1983, A depositional contact between the Galice Formation and a Late Jurassic ophiolite in northwestern California and southwestern Oregon: Oregon Geology, v. 45, no. 1, p. 3-9.Harper, G.D., 1980, Structure and petrology of the Josephine Ophiolite and overlying metasedimentary rocks, northwestern California: Berkeley, Calif., University of California, Ph.D. dissertation, 281 p. |
| NGMDB product | |
| Counties | Josephine |