Pensauken Formation Explained

Pensauken Formation
Type:	Formation
Namedby:	Rollin D. Salisbury (1893)^[1]
Region:	New Jersey, Pennsylvania, Delaware, Maryland
Country:	United States

The Pensauken Formation is a geologic formation in Delaware, Maryland, New Jersey, and Pennsylvania, of Late Tertiary age.^[2]

The Pensauken is described as "Fine-to-coarse sand, minor silt and very coarse sand; reddish-yellow to yellow; pebble gravel." It may be massive (without stratification) or stratified, and may contain crossbedding.^[3]

The Pensauken was initially described by Rollin D. Salisbury as the "Second Stage of the Yellow Gravel", with the first stage being the Beacon Hill Formation, the third being the Jamesburg Formation, and the fourth being the Cape May Formation.^{[1] [4]}

The formation is named after exposures near the mouth of Pennsauken Creek in New Jersey.

Notes and References

1. Rollin D. Salisbury, Surface Geology Report of Progress, 1893, Geological Survey of New Jersey, Annual Report of the State Geologist for the year 1893, pp. 35–328.
2. National Geologic Map Database, Geolex – Unit Summary, Pensauken
3. Scott D. Stanford, 2004. Surficial geology of the Camden and Philadelphia quadrangles, Camden, Gloucester, and Burlington counties, New Jersey. New Jersey Geological Survey. Open-file Map OFM 60. Map Scale: 1:24,000.
4. Shattuck, G.B., 1901, The Pleistocene problem of the north Atlantic Coastal Plain: Johns Hopkins University Circular, v. 20, no. 152, p. 69-75.