|Name||Yorktown Formation and Duplin Formation, Undivided|
Unconsolidated > Fine-detrital > ClayYorktown Formation: fossiliferous clay
Sedimentary > Carbonate > LimestoneDuplin Formation: limestone, bluish gray
Unconsolidated > Coarse-detrital > SandYorktown Formation: varying amounts of fine-grained sand, bluish gray, shell material commonly concentrated in lenses; Duplin Formation: shelly, medium- to coarse-grained sand, sandy marl
Unconsolidated > MarlDuplin Formation: sandy marl
Rhodes, Thomas S., and Conrad, Stephen G., 1985, Geologic Map of North Carolina: Department of Natural Resources and Community Development, Division of Land Resources, and the NC Geological Survey, compiled by Brown, Philip M., et al, and Parker, John M. III, and in association with the State Geologic Map Advisory Committee, scale 1:500,000.
The North Carolina Dept. of Environment, Health, and Natural Resources, Division of Land Resources, NC Geological Survey, in cooperation with the NC Center for Geographic Information and Analysis, 1998 (updated 2007), Geology - North Carolina (1:250,000), coverage data file geol250. The data represents the digital equivalent of the official State Geology map (1:500,000 scale), but was digitized from (1:250,000 scale) base maps.
|Counties||Beaufort - Bertie - Bladen - Carteret - Chowan - Columbus - Craven - Duplin - Edgecombe - Gates - Greene - Halifax - Hertford - Hoke - Johnston - Jones - Martin - Nash - Northampton - Onslow - Pamlico - Pender - Perquimans - Pitt - Robeson - Sampson - Scotland - Washington - Wayne - Wilson|