Middle Miocene to Oligocene volcanic and sedimentary rocks, undivided

Sequences of diverse volcanic rocks with abundant interbedded sedimentary rocks. (11-32 Ma)
State Arizona
Name Middle Miocene to Oligocene volcanic and sedimentary rocks, undivided
Geologic age Oligocene to Middle Miocene
Lithologic constituents
Major
Igneous > Volcanic (Flow)Sequences of diverse volcanic rocks
Sedimentary > Clastic (Bed)abundant interbedded sedimentary rocks
References

Richard, S.M., Reynolds, S.J., Spencer, J.E., and Pearthree, P.A., 2000, Geologic Map of Arizona: Arizona Geological Survey Map 35, 1 sheet, scale 1:1,000,000.

Nealey, L.D., and Sheridan, M.F., 1989, Post-Laramide volcanic rocks of Arizona and northern Sonora, Mexico, and their inclusions, in Jenney, J.P., and Reynolds, S.J., editors, Geologic evolution of Arizona: Arizona Geological Society Diges

Spencer, J.E., and Reynolds, S.J., 1989, Middle Tertiary tectonics of Arizona and adjacent areas, in Jenney, J.P., and Reynolds, S.J., editors, Geologic evolution of Arizona: Arizona Geological Society Digest 17, p. 539-574.

NGMDB product
Counties Gila - La Paz - Maricopa - Mohave - Pinal - Yavapai - Yuma