Tertiary volcanic flow rocks, unit 17 (Cascade Range)

Tertiary volcanic flow rocks; minor pyroclastic deposits.
State California
Name Tertiary volcanic flow rocks, unit 17 (Cascade Range)
Geologic age Tertiary (2-24 Ma)
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Andesite (Flow, Volcaniclastic-volcanic breccia, Volcaniclastic-lahar)
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow, Volcaniclastic-volcanic breccia, Volcaniclastic-lahar)
Incidental
Igneous > Volcanic > Felsic-volcanic > Dacite (Volcaniclastic-volcanic breccia, Flow, Dome)
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Pyroclastic, Flow, Dome)
Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Flow, Volcaniclastic-volcanic breccia, Volcaniclastic-lahar)
Stratigraphic units Colestin Fm., Raymond Peak Andesites, Roxy Fm., Shasta Lavas, Silver Peak Andesites, Table Mountain Latite, Tryon Peak Flows, Warner Basalt (part), Wasson Fm.
References
NGMDB product
Counties Alpine - Butte - Calaveras - Lassen - Modoc - Mono - Nevada - Placer - Plumas - Shasta - Sierra - Siskiyou - Stanislaus - Tehama - Tuolumne