U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Newsom
Search archives
Map showing publication footprint
  • Usage in publication:
    • Newsom shaly clay
  • Modifications:
    • Named
  • Dominant lithology:
    • Clay
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Foerste, A.F., 1901, Silurian and Devonian limestones of Tennessee and Kentucky: Geological Society of America Bulletin, v. 12, p. 395-444.


Summary:

Name Newsom shaly clay applied to interval overlying Whites Bend (Laurel) limestone and underlying Bledsoe (Louisville) limestone at Newsoms Station in north-central TN. Thickness ranges from 0 to 8 ft. Included in Clifton limestone. Same as Waldron shaly clay of IN. Age is Silurian (Niagaran).

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


Map showing publication footprint
  • Usage in publication:
    • Newsom shale
  • Modifications:
    • Redescribed
    • Overview
  • Dominant lithology:
    • Shale
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Morris, R.W., and Hill, B.L., 1952, New Ostracoda from the Middle Silurian Newsom shale of Tennessee: Bulletins of American Paleontology, v. 34, no. 142, 22 p.


Summary:

Newsom shale, as exposed in the vicinity of its type section in Davidson Co., north-central TN, is a soft calcareous shale that upon weathering breaks down into a yellowish clay. Contains megafossil fauna that is closely related to that of Waldron shale of IN.

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 ([ ]).