Early Pleistocene to late Miocene basin deposits (AZQTs;0)

Poorly sorted, variably consolidated gravel and sand that range widely in age. These sediments are generally light gray or tan. This unit is generally mapped in areas of deep late Cenozoic stream incision and landscape degradation where thin Quaternary deposits (map units Qy, Qm, Qo) discontinuously blanket older deposits (map units Tsy or Tsm) and the two cannot be differentiated at the scale of this map. (0.75-10 Ma)

State	Arizona
Name	Early Pleistocene to late Miocene basin deposits
Geologic age	Late Pliocene to Early Pleistocene
Original map label	QTs
Primary rock type	gravel
Secondary rock type	sand
Other rock types	mud; silt
Lithologic constituents	Minor Unconsolidated > Fine-detrital > Silt (Fluvial) Unconsolidated > Fine-detrital > Silt (Alluvial) Unconsolidated > Coarse-detrital > Sand (Fluvial) Unconsolidated > Coarse-detrital > Sand (Alluvial) Unconsolidated > Coarse-detrital > Gravel (Fluvial) Unconsolidated > Coarse-detrital > Gravel (Alluvial) Incidental Unconsolidated > Fine-detrital > Clay (Lacustrine) Unconsolidated > Fine-detrital > Clay (Terrace, stream) Unconsolidated > Fine-detrital > Clay (Alluvial) Unconsolidated > Fine-detrital > Clay (Fluvial) Unconsolidated > Fine-detrital > Silt (Eolian) Unconsolidated > Fine-detrital > Silt (Lacustrine) Unconsolidated > Fine-detrital > Silt (Terrace, stream) Unconsolidated > Coarse-detrital > Sand (Lacustrine) Unconsolidated > Coarse-detrital > Sand (Eolian) Unconsolidated > Coarse-detrital > Gravel (Terrace, stream) Unconsolidated > Coarse-detrital > Sand (Terrace, stream)
Map 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.
Unit 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.
Geographic coverage	Gila - Greenlee - La Paz - Maricopa - Mohave - Pima - Pinal