Tertiary volcanic flow rocks, unit 3 (Sonoma Volcanic Field) (CATv3;0)

State	California
Name	Tertiary volcanic flow rocks, unit 3 (Sonoma Volcanic Field)
Geologic age	Tertiary (3-7 Ma)
Original map label	Tv
Primary rock type	dacite
Secondary rock type	rhyolite
Other rock types	andesite; basalt; ash-flow tuff; ignimbrite; tuff
Lithologic constituents	Major Igneous > Volcanic > Felsic-volcanic > Dacite (Flow) Minor Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow) Incidental Igneous > Volcanic > Mafic-volcanic > Basalt (Pyroclastic) Igneous > Volcanic > Mafic-volcanic > Basalt (Flow) Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Flow) Igneous > Volcanic > Mafic-volcanic > Andesite (Flow) Igneous > Volcanic > Felsic-volcanic > Dacite (Dome) Igneous > Volcanic > Felsic-volcanic > Dacite (Pyroclastic, ash-flow) Igneous > Volcanic > Felsic-volcanic > Dacite (Pyroclastic, air fall) Igneous > Volcanic > Felsic-volcanic > Rhyolite (Dome) Igneous > Volcanic > Felsic-volcanic > Rhyolite (Pyroclastic, ash-flow) Igneous > Volcanic > Felsic-volcanic > Rhyolite (Pyroclastic, air fall)
Map references	Jennings, C.W., Strand, R.G., and Rogers, T.H., 1977, Geologic map of California: California Division of Mines and Geology, scale 1:750,000.
Unit references	Whitlock, Jaime S., 2002, Evidence of a mantle wedge source for slab window volcanism in the northern California coast ranges. Unpublished M.S. Thesis, the Pennsylvania State University, College Station, Pennsylvania, 78 p. McLaughlin, R.J., and Sarna-Wojcicki, A., 2003, Geology of the Right Stepover Region between the Rodgers Creek, Healdsburg, and Maacama Faults, Northern San Francisco Bay Region. U.S. Geological Survey Open-File Report 03-502, 23 p., url http://geopubs.wr.usgs.gov/open-file/of03-502/ [http://pubs.er.usgs.gov/publication/ofr03502] [http://geopubs.wr.usgs.gov/open-file/of03-502/] Jennings, C.W., Strand, R.G., and Rogers, T.H., 1977, Geologic map of California: California Division of Mines and Geology, scale 1:750,000.
Geographic coverage	Lake - Napa - Solano - Sonoma