Potomac Formation (DEKp;0)

State	Delaware
Name	Potomac Formation
Geologic age	Cretaceous
Original map label	Kp
Comments	Lower Cretaceous, may be overlain locally by the Pleistocene Columbia Formation
Primary rock type	silt
Secondary rock type	clay or mud
Other rock types	sand
Lithologic constituents	Major Unconsolidated > Fine-detrital > Silt Unconsolidated > Fine-detrital > Clay Unconsolidated > Coarse-detrital > Sand
Map references	Spoljaric, Nenad and Jordan, Robert R., 1966, Generalized Geologic Map of Delaware, State of Delaware, Delaware Geological Survey, scale ca. 1:300,000.
Unit references	Spoljaric, Nenad and Jordan, Robert R., 1966, Generalized Geologic Map of Delaware, State of Delaware, Delaware Geological Survey, scale ca. 1:300,000.
Geographic coverage	New Castle