Downer is the New Jersey state soil. The Downer has four soil horizons:
Surface layer: dark grayish brown loamy sand Subsurface layer: grayish brown sandy loam Subsoil - upper: yellowish brown gravelly sandy loam Subsoil - lower: yellowish brown sand and coarse sand The Downer Series was established in 1960 in Gloucester County. Downer soils are formed in fluviomarine deposits in the Northern Atlantic Coastal Plains.
See also Pedology (soil study) List of U.S. state soils
References
USDA Natural Resources Conservation Service State Soils New Jersey (PDF) Archived 2017-05-07 at the Wayback Machine