State | Oregon |
---|---|
Name | Sedimentary rocks |
Geologic age | Jurassic |
Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Mudstone (Bed)
Minor
Sedimentary > Clastic > Sandstone > Graywacke (Bed)
Igneous > Volcanic > Felsic-volcanic > Dacite (Pyroclastic-tuff)
Sedimentary > Carbonate > Limestone (Bed)
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow, Volcaniclastic-volcanic breccia)Also breccia and agglomerate
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow, Volcaniclastic-volcanic breccia)Also breccia and agglomerate
Metamorphic > Metasedimentary (Greenschist)
Igneous > Volcanic > Mafic-volcanic > Andesite (Pyroclastic-tuff, Flow)
Sedimentary > Clastic > Siltstone (Bed)
|
Stratigraphic units | Graylock Formation (OR028), Mowich Group (OR028), Snowshoe Formation (OR070), Shaw Member of Snowshoe Formation (OR028), Keller Creek Shale (OR008), Weberg Formation (OR070), Warm Springs Formation (OR070), Trowbridge Formation (OR070), Lonesome Formation (OR070), Coon Hollow Formation (OR071) |
References | Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000.Greene, R.C., Walker, G.W., and Corcoran, R.E., 1972, Geologic map of the Burns quadrangle, Oregon: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-680, scale 1:250,000.https://pubs.er.usgs.gov/publication/i680 Brown, C.E. and Thayer, T.P., 1966, Geologic map of the Canyon City quadrangle, northeastern Oregon: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-447, scale 1:250,000.https://pubs.er.usgs.gov/publication/i447 Walker, G.W., 1979, Reconnaissance geologic map of the Oregon part of the Grangeville quadrangle, Baker, Union, Umatilla, and Wallowa Counties, Oregon: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-1116, scale 1;250,000.https://pubs.er.usgs.gov/publication/i1116 Walker, G.W., 1977, Geologic map of Oregon east of the 121st meridian: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-902, scale 1:500,000.https://pubs.er.usgs.gov/publication/i902 Morrison, R.F., 1964, Upper Jurassic mudstone unit named in Snake River Canyon, Oregon-Idaho boundary: Northwest Science, v. 38, no. 3, p. 83-87.Wagner, , N.S., Brooks, H.C., and Imlay, R.W., 1963, Marine Jurassic exposures in Juniper Mountain area of eastern Oregon:American Association of Petroleum Geologists Bulletin, v. 47, no. 4, p. 687-691.Evans, J.G., Geologic map of the Dooley Mountain quadrangle, Baker County, Oregon: U.S. Geological Survey Geological Quadrangle GQ-1694, scale 1: 24,000.https://pubs.er.usgs.gov/publication/gq1694 Brooks, H.C. and Ferns, M.L., 1979, Geologic map of the Bullrun Rock quadrangle, Baker and Grant Counties, Oregon: Oregon Department of Geology and Mineral Industries Open-File Map O-79-6, scale 1:24,000.Brooks, H.C., Ferns, M.L., Nusbaum, R.L., and Kovich, P.M., 1979, Geologic map of the Rastus Mountain quadrangle, Baker and Grant Counties, Oregon: Oregon Department of Geology and Mineral Industries Open-File Map O-79-7, scale 1:24,000. |
NGMDB product | |
Counties | Baker - Crook - Grant - Harney - Malheur - Wallowa |