State | Oregon |
---|---|
Name | Mafic and intermediate intrusive rocks |
Geologic age | Miocene to Pliocene |
Lithologic constituents |
Major
Igneous > Plutonic > Gabbroic > Gabbro (Dike or sill, Stock or pipe)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basalt (Dike or sill, Stock or pipe)
Minor
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-andesite (Dike or sill)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basaltic-andesite (Stock or pipe)
|
Comments | Gabbro dikes, sills, and at least one plug intrude Steens Basalt in Northern Pueblo Mountains and are substantial in size, but too small to appear on State geologic map (OR252) |
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 Walker, G.W. and Repenning, C.A., 1965, Geologic map of Adel quadrangle, Lake, Harney, and Malheur Counties, Oregon: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-446, scale 1:250,000.https://pubs.er.usgs.gov/publication/i446 Ferns, M.L., Brooks, H.C., Evans, J.G., and Cummings, M.L., 1993b, Geologic map of the Vale 30 x 60 minute quadrangle, Malheur County Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series GMS-77, scale 1:100,000.Kittleman, L.R., Green, A.R., Hagood, A.R., Johnson, A.M., McMurray, J.M., Russell, R.G., and Weeden, D.A., 1965, Cenozoic stratigraphy of the Owyhee region, southeastern Oregon: Eugene, University of Oregon Museum of Natural History Bulletin 1, 45 p.Kittleman, L.R., Green, A.R., Haddock, G.H., Hagood, A.R., Johnson, A.M., McMurray, J.M., Russell, R.G., and Weeden, D.A., 1967, Geologic map of the Owyhee region, Malheur County, Oregon: Eugene, University of Oregon Museum of Natural History Bulletion 8, scale 1:125,000.Brooks, H.C., McIntyre, J.R., and Walker, G.W., 1976, Geology of the Oregon part of the Baker 1o by 2o quadrangle: Oregon Department of Geology and Mineral Industries Geologic Map Series GMS-7, scale 1:250,000.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 Thayer, T.P. and Brown, C.E., 1966, Local thickening of basalts and late Tertiary silicic volcanism in the Canyon City quadrangle, northeastern Oregon: U.S. Geological Survey Professional Paper 550-C, p. C73-C78.https://pubs.er.usgs.gov/publication/pp550C Taubeneck, W.H., 1970, Dikes of Columbia River Basalt in northeastern Oregon, western Idaho, and southeastern Washington: Columbia River Symposium, 2d, Cheney, Washington, 1969, Proceedings, Eastern Washington State College Press, p. 73-96.Minor, S.A., Rytuba, J.J., Vander Meulen, D.B., Grubensky, M.J., and Tegtmeyer, K.J., 1987a, Geologic map of the Wildhorse Lake quadrangle, Harney County, Oregon: U.S. Geological Survey Miscellaneous Field Studies Map MF-1915, scale 1: 24,000.https://pubs.er.usgs.gov/publication/mf1915 Minor, S.A., Rytuba, J.J., Goeldner, C.A., and Tegtmeyer, K.J., 1987b, Geologic map of the Alvord Hot Spring quadrangle, Harney County, Oregon: U.S. Geological Survey Miscellaneous Field Studies Map MF-1916, scale 1:24,000.https://pubs.er.usgs.gov/publication/mf1916 Brooks, H.C., Ferns, M.L., and Mullen, A.D., 1982, Geology and mineral deposits of the Granite quadrangle, Grant County, Oregon: Oregon Department of Geology and Mineral Industries Geologic Map Series GMS-25, scale 1:24,000.Evans, J.G., 1989, Geologic map of the Desolation Butte quadrangle, Grant and Umatilla Counties, Oregon: U.S. Geological Survey Geologic Quadrangle GQ-1654, scale 1:62,500.https://pubs.er.usgs.gov/publication/gq1654 Evans, J.G., 1994, unpub. mapping, Hereford quadrangle, Baker County, Oregon.Evans, J.G., unpub. mapping, 1994, Fields quadrangle, Harney CountyEvans, J.G., unpub. mapping, 1994, Ladycomb Peak quadrangle, Harney County |
NGMDB product | |
Counties | Baker - Grant - Harney - Klamath - Lake - Malheur - Union |