| State | Washington |
|---|---|
| Name | Quaternary nonmarine deposits |
| Geologic age | Pleistocene |
| Lithologic constituents |
Major
Unconsolidated > Fine-detrital > Silt (Eolian-loess)
Incidental
Unconsolidated > Coarse-detrital > Gravel (Glacial)
Unconsolidated > Coarse-detrital > Boulders (Glacial)
Unconsolidated > Coarse-detrital > Sand (Glacial)
|
| Comments | Water-laid material locally - probably refers to glaciolacustrine deposits (eskers, outwash flood) from late Pleistocene-Holocene (Spokane?) glaciation which carved the Channeled Scablands (coulees and dry valleys in Columbia Plateau). Located primarily in Channeled Scablands. |
| Stratigraphic units | Palouse Formation |
| References | Huntting, M.T., Bennett, W.A.G., Livingston, V.E.Jr., and Moen, W.S., 1961, Geologic Map of Washington: Washington Division of Mines and Geology, scale 1:500,000.Easterbrook, D.J., 1976a, Quaternary Geology of the Pacific Northwest, in Mahaney, W.C., ed., Quaternary Stratigraphy of North America: Stroudsberg, PA, Dowden, Hutchinson and Ross, p. 441-462.Schuster, J.E., Gulick, C.W., Reidel, S.P., Fecht, K.R., Zurenko, S., 1997, Geologic Map of Washington--Southeast Quadrant: Washington Division of Geology and Earth Resources Geologic Map GM-45, scale 1:250,000.Bretz, J.H., 1923, The Channeled Scablands of the Columbia Plateau: The Journal of Geology, v. 31, no. 8, p. 617-649. |
| NGMDB product | |
| Counties | Adams - Asotin - Benton - Columbia - Douglas - Franklin - Garfield - Grant - Kittitas - Klickitat - Lincoln - Spokane - Walla Walla - Whitman - Yakima |