Digital Geodata Series
DGS99-3 Surficial Geology of Hunterdon County, New Jersey
DGS99-3 is an ARC/INFO Geographic Information
Systems (GIS) coverage of surficial geologic materials of Hunterdon County,
New Jersey. Surficial materials are the unconsolidated sediments that overlie
bedrock formations, and that are the parent material for agronomic soils.
In Hunterdon County they include stream, wetland, glacial, windblown, and
hillslope sediments and weathered bedrock material. The weathered bedrock
material may be as much as 200 feet thick. The other sediments are generally
less than 20 feet thick. The surficial materials range from coarse gravel
to clay and peat. They affect the movement of ground water from the surface
into underlying bedrock aquifers, and are aquifers themselves in places.
They also provide foundation support for structures, and supply sand and
gravel for construction purposes.
This map was simplified into five units for this display by combining 29
geological units available with DGS99-3.