Tertiary volcanic flow rocks, unit 11 (Jacumba)

Tertiary volcanic flow rocks; minor pyroclastic deposits.
State California
Name Tertiary volcanic flow rocks, unit 11 (Jacumba)
Geologic age Tertiary (12-19 Ma)
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow, Volcaniclastic-volcanic breccia, Pyroclastic)
Igneous > Volcanic > Mafic-volcanic > Andesite (Flow, Volcaniclastic-volcanic breccia, Volcaniclastic-lahar)
Incidental
Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Flow, Volcaniclastic-volcanic breccia, Volcaniclastic-lahar)
References
NGMDB product
Counties Imperial - San Diego