Eolian deposits, undifferentiated
Eolian deposits, undifferentiated
Holocene to late Pleistocene
Undifferentiated eolian deposits commonly occurring on the lee side of valleys along the range margins. Generally unconsolidated and well-sorted sand and silt deposited as dunes or sheets. Locally may include somewhat older eolian deposits and interbedded lacustrine deposits. Includes eolian subunits within the Modesto Formation (Davis and Hall, 1959; Marchand and Allwardt, 1981) and several other undifferentiated eolian map units.