Recent (Holocene) volcanic flow rocks, unit 1 (Cascade Volcanic Field)

Recent (Holocene) volcanic flow rocks; minor pyroclastic deposits; in part Pleistocene.
State California
Name Recent (Holocene) volcanic flow rocks, unit 1 (Cascade Volcanic Field)
Geologic age Holocene
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Andesite (Volcaniclastic-volcanic breccia, Flow, Dome)
Igneous > Volcanic > Felsic-volcanic > Dacite (Volcaniclastic-volcanic breccia, Flow, Dome)
Stratigraphic units Modoc Basalt, Pluto's Cave Basalt
References

Jennings, C.W., Strand, R.G., Rogers, T.H., Boylan, R.T., Moar, R.R., and Switzer, R.A., 1977, Geologic Map of California: California Division of Mines and Geology, Geologic Data Map 2, scale 1:750,000.

Luedke, R.G., and Smith, R.L., 1981, Map showing distribution, composition, and age of late Cenozoic volcanic centers in California and Nevada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1091-C, scale 1:1,000,000.

https://pubs.er.usgs.gov/publication/i1091C

NGMDB product
Counties Lassen - Modoc - Shasta - Siskiyou - Tehama