Paleozoic and Permo-Triassic granitic rocks, unit 2 (San Gabriel Mountains)

Paleozoic and Permo-Triassic granitic rocks in the San Gabriel and Klamath Mountains
State California
Name Paleozoic and Permo-Triassic granitic rocks, unit 2 (San Gabriel Mountains)
Geologic age Late Triassic
Lithologic constituents
Major
Igneous > Plutonic > Syenitic > Quartz-monzonite (Pluton)
Minor
Igneous > Plutonic > Dioritic > Quartz-diorite (Pluton)
Igneous > Plutonic > Granitic > Granodiorite (Pluton)
Igneous > Plutonic > Syenitic > Monzonite (Pluton)
Igneous > Plutonic > Dioritic > Quartz-monzodiorite (Pluton)
Igneous > Plutonic > Dioritic > Diorite (Pluton)
Comments San Gabriel Mountains. Mt. Lowe Intrusion
Stratigraphic units Mount Lowe Granodiorite, Parker Quartz Diorite
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.

Jennings, C.W., 1985, An explanatory text to accompany the 1:750,000 scale fault and geologic maps of California: California Division of Mines and Geology, Bulletin 201, 197 p.

Jennings, C.W., and Strand, R.G., 1969, Geologic map of California, Olaf P. Jenkins edition, Los Angeles sheet, scale 1:250,000.

Rogers, T.H., 1969, Geologic map of California, Olaf P. Jenkins edition, San Bernardino sheet, scale 1:250,000.

Powell, R.E., 1993, Balanced palinspastic reconstruction of pre-late Cenozoic paleogeology, southern California: Geologic and kinematic constraints on evolution of the San Andreas fault system, in Powell, R.E., Weldon, R.J., II, and Matti, J.C., eds., The San Andreas fault system: Displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178, p. 1-106, scale 1:750,000.

Ehlig, P.L., 1981, Origin and tectonic history of the basement terrane of the San Gabriel Mountains, central Transverse Ranges, in Ernst, W.G., ed., The geotectonic development of California (Rubey Volume 1): Englewood Cliffs, N.J., Prentice-Hall, p. 253-283.

Barth, A.P., Tosdal, R.M., Wooden, J.L., and Howard, K.A., 1997, Triassic plutonism in southern California: southward younging of arc initiation along a truncated continental margin: Tectonics, v. 16, p. 290-304.

Barth, A.P., and Ehlig, P.L., 1988, Geochemistry and petrogenesis of the marginal zone of the Mount Lowe Intrusion, central San Gabriel Mountains, California: Contributions to Mineralogy and Petrology, v. 100, p. 192-204.

NGMDB product
Counties Los Angeles