Glacial deposits (Pleistocene) (ORQg;0)

State	Oregon
Name	Glacial deposits (Pleistocene)
Geologic age	Pleistocene
Original map label	Qg
Comments	In OR291, glacial deposits include well preserved lateral and recessional morraines of late Pleistocene (10-30 ka) Pinedale glaciation and more poorly preserved lateral moraines of middle Pleistocene (150-200 ka) Bull Lake glaciation
Primary rock type	gravel
Secondary rock type	moraine
Other rock types
Lithologic constituents	Major Sedimentary > Clastic > Mixed-clastic > Conglomerate-sandstone (Bed)Contains unsorted gravel, sand, and rock flour Minor Sedimentary > Clastic > Mixed-clastic > Sandstone-Mudstone (Bed)Unconsolidated
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. 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. [http://pubs.er.usgs.gov/publication/i446] 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. [http://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 [http://pubs.er.usgs.gov/publication/i1116] Walker, G.W., 1973, Reconnaissance geologic map of the Pendleton quadrangle, Oregon and Washington: U.S. Geological Survey Miscellaneus Geologic Investigations Map I-727, scale 1:250,000. [http://pubs.er.usgs.gov/publication/i727] 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. [http://pubs.er.usgs.gov/publication/i902] Ferns, M.L. and Brooks, H.C., 1987, Geology and mineral resources map of the Elkhorn Peak quadrangle, Baker County, Oregon: Oregon Department of Geology and Mineral Industries Geologican Map Series GMS-41, scale 1:24,000. Brooks, H.C., Ferns, M.L., Wheeler, G.R., and Avery, D.G., 1983, Geology and gold deposits map of the northeast quarter of the Bates quadrangle, Baker and Grant Counties, Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series GMS-29, scale 1:24,000 Brooks, H.C., Ferns, M.L., Coward, R.I., Paul, E.K., and Nunlist, M., 1982, Geology and gold deposits map of the Bourne quadrangle, Baker and Grant Counties, Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series GMS-19, 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. [http://pubs.er.usgs.gov/publication/gq1654] Minor, S.A., Rytuba, J.J., Grubensky, M.J., Vander Meulen, D.B., Goeldner, C.A., and Tegtmeyer, K.J., 1987, Geologic map of the High Steens and Little Blitzen Gorge Wilderness Study Areas, Harney County, Oregon: U.S. Geological Surevy Miscellaneous Field Studies Map MF-1876, scale 1:24,000. Minor, S.A., Rytuba, J.J., Goeldner, C.A., and Tegtmeyer, K.J., 1987, 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. [http://pubs.er.usgs.gov/publication/mf1916] Minor, S.A., Rytuba, J.J., Vander Meulen, D.B., Grubensky, M.J., and Tegtmeyer, K.J., 1987e, Geologic map of the Wildhorse Lake quadrangle, Harney County, Oregon: U.S. Geological Survey Miscellaneous Field Studies Map MF-1915, scale 1:24,000. [http://pubs.er.usgs.gov/publication/mf1915] Thayer, T.P., Brown, C.E., and Hay, R.I., 1967, Preliminary geologic map of the Prairie City quadrangle, Grant County, Oregon: U.S. Geological Survey Open-File Map, scale 1:62,500. [http://pubs.er.usgs.gov/publication/ofr67214] Whitsun, N.W., 1988, Geochemical stratigraphy of the Dooley Rhyolite Breccia and Tertiary basalts in the Dooley Mountain quadrangle, Oregon: Portland, Oregon, Portland State University, master's thesis, 122 p. Ferns, M.L., Madin, I.P., and Taubeneck, W.H., 2001, Reconnaissance geologic map of the La Grande 30' x 60' quadrangle, Baker, Grant, Umatilla, and Union Counties, Oregon: Oregon Department of Geology and Mineral Industries Reconnaissance Map Series RMS-1, 52 p., scale 1:100,000. Madin, I.P. and Taubeneck, W.H., 2003, Geologic map of the Amnthony Buttes quadrangle, Union and Baker Counties, Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series GMS-107, scale 1:24,000. Weiss, P.L., Gualtieri,, J.L., Cannon, W.F., Tucher, E.T., McMahan, A.B., and Federspiel, F.E., 1976, Mineral resources of the Eagle Cap Wilderness and adjacent areas, Oregon: U.S. Geological Survey Bulletin 1385-E, 100 p. [http://pubs.er.usgs.gov/publication/b1385E] Ferns, M.L. and Taubeneck, W.H., 1994, Geology and mineral resources of the Limber Jim Creek quadrangle, Union County, Oregon: Oregon Department of Geology and Mineral Industries Geological Map Series GMS-82, scale 1:24,000.
Geographic coverage	Baker - Clackamas - Deschutes - Douglas - Grant - Harney - Hood River - Jackson - Jefferson - Klamath - Lake - Lane - Linn - Marion - Multnomah - Union - Wallowa - Wasco