Alluvial deposits on one or more terrace levels
Alluvial deposits of local streams or of overbank flow of major streams - In some areas includes deposits in abandoned meanders of major streams
Contains lenses of gravel and clay
Deposited mostly on terrace deposits of the second level. Younger than some terrace deposits, older than others
Alluvial deposits of present streams and on one or more terrace levels
Alluvium - clay, silt, sand, and gravel.
Sand and clay