Quaternary surficial deposits, undivided (AZQ;0)

Quaternary surficial deposits, undivided

Unconsolidated to strongly consolidated alluvial and eolian deposits. This unit includes: coarse, poorly sorted alluvial fan and terrace deposits on middle and upper piedmonts and along large drainages; sand, silt and clay on alluvial plains and playas; and wind-blown sand deposits. (0-2 Ma)

State	Arizona
Name	Quaternary surficial deposits, undivided
Geologic age	Quaternary
Lithologic constituents	Major Unconsolidated > Fine-detrital > Silt (Alluvial, Eolian, Terrace-stream, Playa) Unconsolidated > Fine-detrital > Clay (Alluvial, Eolian, Terrace-stream, Playa) Unconsolidated > Coarse-detrital > Sand (Alluvial, Eolian, Terrace-stream, Playa)
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

Quaternary surficial deposits, undivided

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.