Early Pleistocene to latest Pliocene surficial deposits (AZQo;0)

Early Pleistocene to latest Pliocene surficial deposits

Coarse relict alluvial fan deposits that form rounded ridges or flat, isolated surfaces that are moderately to deeply incised by streams. These deposits are generally topographically high and have undergone substantial erosion. Deposits are moderately to strongly consolidated, and commonly contain coarser grained sediment than younger deposits in the same area. (0.75-3 Ma)

State	Arizona
Name	Early Pleistocene to latest Pliocene surficial deposits
Geologic age	Late Pliocene to Early Pleistocene
Lithologic constituents	Major Unconsolidated > Coarse-detrital > Gravel (Alluvial) Unconsolidated > Coarse-detrital > Sand (Alluvial)
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.
NGMDB product	NGMDB product page for 34746
Counties	Apache - Cochise - Coconino - Gila - Graham - Greenlee - La Paz - Maricopa - Mohave - Navajo - Pima - Pinal - Santa Cruz - Yavapai - Yuma

Early Pleistocene to latest Pliocene surficial deposits

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.