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National Geologic Map Database
Geologic Unit: Hazlet
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Map showing publication footprint
  • Usage in publication:
    • Hazlet sands
  • Modifications:
    • Named
  • Dominant lithology:
    • Sand
    • Clay
  • AAPG geologic province:
    • Atlantic Coast basin
Publication:

Clark, W.B., Bagg, R.M., and Shattuck, G.B., 1897, Upper Cretaceous formations of New Jersey, Delaware, and Maryland: Geological Society of America Bulletin, v. 8, p. 315-358.


Summary:

Hazlet sands, which compose upper part of Matawan formation, described as chiefly sands, highly ferruginous and brown in color in lower portions and often having indurated crusts. Above the brown sand is frequently a well-developed dark-colored clay very like lower part of underlying Crosswicks clays. Conformably overlain by Mount Laurel sands. Age is Late Cretaceous.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Hazlet sands
  • Modifications:
    • Overview
    • Revised
  • AAPG geologic province:
    • Atlantic Coast basin
Publication:

Clark, W.B., 1904, The Matawan formation of Maryland, Delaware, and New Jersey: American Journal of Science, 4th series, v. 18, p. 435-440.


Summary:

The Hazlet sands include Marshalltown sand and clay above and Columbus [Englishtown] sand below, and compose upper part of Matawan formation. [Clark and others (1897) also included Wenonah sand, since they extended the name to base of Mount Laurel sand.]

Source: GNU records (USGS DDS-6; Reston GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).