State | Washington |
---|---|
Name | Lower upper Eocene marine and nonmarine rocks |
Geologic age | Eocene |
Lithologic constituents |
Major
Sedimentary > Clastic > Sandstone (Bed, Arkosic)Mostly arkosic to feldspathic sandstone but also includes significant amounts of basaltic sandstone, arenite, and graywacke.
Sedimentary > Clastic > Siltstone (Tuffaceous)
Incidental
Sedimentary > Clastic > Mudstone > Claystone (Bed)
Sedimentary > Coal (Bed)
Sedimentary > Clastic > Mixed-clastic (Olistrostrome)Cape Flattery breccia.
Sedimentary > Clastic > Mudstone > Shale (Bed)
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow, Pyroclastic-tuff, Volcaniclastic-volcanic breccia)
Sedimentary > Clastic > Conglomerate (Bed)
|
Comments | WAE2 is sometimes undifferentiated from WAE1 in the literature. McIntosh Formation is 500-3500 ft thick (Wagner, 1967a, b). |
Stratigraphic units | Cowlitz formation (in part: Stillwater member); Lyre Formation (including Cape Flattery breccia); McIntosh Formation (in part) |
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.Walsh, T.J., Korosec, M.A., Phillips, W.M., Logan, R.T., Schasse, H.W., 1987, Geologic Map of Washington-Southwest Quadrant: Washington Division of Geology and Earth Resources, Geologic Map GM-34, scale 1:250,000.Snavely, P.D., MacLeod, N.S., Niem, A.R., 1993, Geologic map of the Cape Flattery, Challam Bay, Ozette Lake, and Lake Pleasant Quadrangles, Northwestern Olympic Peninsula, Washington: U. S. Geological Survey Map I-1946, scale 1:48,000.Wells, R.E., 1989, Geologic Map of the Cape Disappointment-Naselle River Area, Pacific and Wahkiakum Counties, Washington: U. S. Geological Survey Miscellaneous Investigations Series Map I-1832, scale 1:62,500.Wagner, H.C., 1967a, Preliminary geologic map of the South Bend quadrangle, Pacific County, Washington: U. S. Geological Survey Open File Reports 67-266, scale 1:62,500.Wagner, H.C., 1967b, Preliminary geologic map of the Haymond quadrangle, Pacific County, Washington, U. S. Geological Survey Open File Reports 67-265, scale 1:62,500.Henriksen, D.A., 1956, Eocene Stratigraphy of the Lower Cowlitz River-Eastern Willapa Hills Area, Southwestern Washington: Washington Division of Mines and Geology Bulletin No. 43, 122 p, 1 pls.Snavely, P.D.,Jr., Brown, R.D., Roberts, A.E., Rau, W.W., 1958, Geology and Coal Resources of the Centralia-Chelalis District, Washington: U. S. Geological Survey Bulletin 1053, 149 p.Walsh, T.J., 1987, Geologic Map of the Astoria and Ilwaco Quadrangles, Washington and Oregon: Washington Division of Geology and Earth Resources Open File Report 87-2, scale 1:100,000. |
NGMDB product | |
Counties | Clallam - Cowlitz - Grays Harbor - King - Lewis - Pacific - Pierce - Thurston - Wahkiakum |