Bryn Mawr Formation

Red and brown quartz sand with silt, clay and fine gravel.
State Delaware
Name Bryn Mawr Formation
Geologic age Age uncertain
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Sand
Unconsolidated > Fine-detrital > Clay
Unconsolidated > Fine-detrital > Silt
Minor
Unconsolidated > Coarse-detrital > Gravel
Comments age undetermined. On PA state geologic map, the Bryn Mawr Formation is considered to be Tertiary in age.
References

Spoljaric, Nenad and Jordan, Robert R., 1966, Generalized Geologic Map of Delaware SP4, State of Delaware, Delaware Geological Survey, scale ca. 1:300,000. Digitized by the Water Resources Division of the U.S. Geological Survey in the mid 1990's.

NGMDB product
Counties New Castle