State | Oregon |
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Name | Glaciofluvial, lacustrine, and pediment sedimentary deposits |
Geologic age | Pleistocene |
Lithologic constituents | Major
Unconsolidated > Coarse-detrital > Sand (Glacial, Fluvial, Lacustrine)
Unconsolidated > Fine-detrital > Silt (Glacial, Fluvial, Lacustrine)
Unconsolidated > Coarse-detrital > Gravel (Glacial, Fluvial, Lacustrine)
|
Comments | In OR292, unit includes late Pleistocene Missoula flood deposits consisting of unconsolidated to semi-consolidated deposits of sand, gravel, and silt |
References | Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000.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.https://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.https://pubs.er.usgs.gov/publication/i902 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. |
NGMDB product | |
Counties | Clackamas - Columbia - Morrow - Multnomah - Umatilla - Union |