Dune sand (Holocene) (ORQd;0)

State	Oregon
Name	Dune sand (Holocene)
Geologic age	Holocene
Original map label	Qd
Comments	Eolian deposits not included in State map in La Grande area, but mapped in OR291, where it contains 0.5-1-m-thick accumulations of Mazama Aas (6.7 ka). Eolian deposits also mapped in the Hermiston area, northwestern Umatilla River Basin (OR292) near Columbia River
Primary rock type	sand
Secondary rock type
Other rock types
Lithologic constituents	Major Sedimentary > Clastic > Sandstone (Bed) Incidental Sedimentary > Clastic (Bed)Pumice
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. 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. [http://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. [http://pubs.er.usgs.gov/publication/i446] 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] Roback, R.C., Vander Meulen, D.B., King, H.D., Plouff, Donald, Munts, S.R., and Willett, S.L., 1987, Mineral resources of the Pueblo Mountains Wilderness Study Area, Harney County, Oregon, and Humboldt County, Nevada: U.S. Geological Survey Bulletin 1740-B, 30 p. [http://pubs.er.usgs.gov/publication/b1740B] Rytuba, J.J., Vander Meulen, D.B., Vercoutere, T.L., and Minor, S.A., 1982b, Reconnaissance geologic map of the Borax Lake quadrangle, Harney County, Oregon: U.S. Geological Survey Open-File Report 82-1126, scale 1:24,000. [http://pubs.er.usgs.gov/publication/ofr821126] Evans, J.G., unpub. mapping, 1994, Fields quadrangle, Harney County Minor, S.A., Rytuba, J.J., and Vercoutere, T.L., 1989, Geologic map of the Windy Point quadrangle, Harney County, Oregon: U.S. Geological Survey Open File Report 89-212, scale 1:24,000. [http://pubs.er.usgs.gov/publication/ofr89212] 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. Ferns, M.L., McConnell, V.S., and Madin, I.P., in prep., Geology of the Umatilla River Basin, Morrow, Umatilla, and Union Counties, Oregon: Oregon Department of Geology and Mineral Industries Open-File Report, 66 p., scale 1:100,000.
Geographic coverage	Clatsop - Coos - Curry - Deschutes - Douglas - Harney - Lake - Lane - Lincoln - Malheur