Yorktown Formation and Duplin Formation, Undivided (NCTpy;11)

State	North Carolina
Name	Yorktown Formation and Duplin Formation, Undivided
Geologic age	Tertiary
Lithologic constituents	Major Unconsolidated > Fine-detrital > ClayYorktown Formation: fossiliferous clay Minor 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
References	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.
NGMDB product	NGMDB product page for 55091
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

State

North Carolina

Name

Yorktown Formation and Duplin Formation, Undivided

Geologic age

Tertiary

Lithologic constituents

Major

Unconsolidated > Fine-detrital > ClayYorktown Formation: fossiliferous clay

Minor

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

References

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.

NGMDB product

NGMDB product page for 55091

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