Pliocene-Pleistocene volcanic rocks (WAPOQv;0)

State	Washington
Name	Pliocene-Pleistocene volcanic rocks
Geologic age	Mostly Pleistocene
Original map label	PLQv
Comments	Referenced literature does not mention associated mudflows.
Primary rock type	andesite
Secondary rock type	basalt
Other rock types
Lithologic constituents	Major Igneous > Volcanic > Mafic-volcanic > Andesite (Flow) Minor Igneous > Volcanic > Mafic-volcanic > Basalt (Flow) Incidental Igneous > Volcanic > Mafic-volcanic > Andesite (Volcaniclastic, volcanic breccia)
Map references	Huntting, M. T., Bennett, W. A. G., Livingston, V. E. Jr., Moen, W. S., 1961, Geologic Map of Washington: Washington Division of Mines and Geology, scale 1:500,000.
Unit references	Huntting, M. T., Bennett, W. A. G., Livingston, V. E. Jr., 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. Warren, W. C., 1941, Relation of the Yakima Basalt to the Keechelus Andesite Series: The Journal of Geology, v. 49, p. 795-814. Luedke, R. G., Smith, R. L., Russell-Robinson, S. L., 1983, Map showing distribution, composition, and age of late Cenozoic volcanoes and volcanic rocks of the Cascade Range and vicinity, northwestern United States: U. S. Geological Survey Miscellaneous Investigations Series Map I-1507, scale 1:500,000. [http://pubs.er.usgs.gov/publication/i1507] Phillips, W. M., 1987, Geologic Map of the Vancouver Quadrangle, Washington and Oregon: Washington Division of Geology and Earth Resources Open File Report 87-10, scale 1:100,000.
Geographic coverage	Asotin - Clark - Columbia - Franklin - Garfield - Lewis - Skamania - Spokane - Whitman - Yakima