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Pyroclastic ejecta of basaltic and andesitic cinder cones

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Mostly unconsolidated, oxidized, fine to coarse, scoriaceous cinders, bombs, and agglutinate deposited in subaerial environment
State Oregon
Name Pyroclastic ejecta of basaltic and andesitic cinder cones
Geologic age Miocene to Holocene
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt (Pyroclastic-cinder cone)Pyroclastic ejecta of basaltic and andesitic cinder cones; unconsolidated, oxidized, fine to coarse, scoriaceous cinders, bombs, and agglutinate deposited in subaerial environment
Igneous > Volcanic > Mafic-volcanic > Andesite (Pyroclastic-cinder cone)Pyroclastic ejecta of basaltic and andesitic cinder cones; unconsolidated, oxidized, fine to coarse, scoriaceous cinders, bombs, and agglutinate deposited in subaerial environment
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., 1966, Geologic map of the west half of the Jordan Valley quadrangle, Malheur County, Oregon: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-457, scale 1:250,000.

https://pubs.er.usgs.gov/publication/i457

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.

https://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.

https://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.

https://pubs.er.usgs.gov/publication/i447

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
NGMDB product
Counties Clackamas - Crook - Deschutes - Douglas - Harney - Jackson - Jefferson - Klamath - Lake - Lane - Linn - Malheur - Marion - Wasco