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National Geologic Map Database
Geologic Unit: Hampton
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Map showing publication footprint
  • Usage in publication:
    • Hampton shale*
  • Modifications:
    • Named
  • Dominant lithology:
    • Shale
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Campbell, M.R., 1899, Bristol folio, Virginia-Tennessee: U.S. Geological Survey Geologic Atlas of the United States Folio, GF-59, 8 p., scale 1:125,000


Summary:

Named the Hampton shale in eastern TN, western NC, and southwestern VA for Hampton, Carter Co., TN. Consists of sandy shale which has a thickness of about 600 feet. Unit forms front of Holston Mountain. Overlies the Unicoi sandstone and underlies an unnamed sandstone [Erwin]. The Hampton is of Early Cambrian age.

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


Map showing publication footprint
  • Usage in publication:
    • Hampton Formation
  • Modifications:
    • Biostratigraphic dating
  • AAPG geologic province:
    • Appalachian basin
Publication:

Walker, Dan, and Driese, S.G., 1991, Constraints on the position of the Precambrian-Cambrian boundary in the southern Appalachians: American Journal of Science, v. 291, no. 3, p. 258-283.


Summary:

Age constraints for the Vendian to Placentian Chilhowee Group are provided by, 1) the occurrence of Vendian acritarchs in the subjacent Sandsuck, Wilhite, and Shields Formations; 2) the first occurrence of PALAEOPHYCUS traces in the basal Cochran and Unicoi Formations; 3) the first occurrences of SKOLOTHOS and PLANOLITES traces in the overlying Nichols and Hampton Formations; 4) the abundance of well-developed arthropod as well as other diagnostic traces in the uppermost Nebo and overlying Murray Formations; 5) the recalculated age of 539ñ30 Ma for the Murray Formation; and 6) reported occurrences of late Placentian or younger body fossils recovered from the Murray Shale, including trilobites, ostracodes, inarticulate brachiopods, hylithoids, and acritarchs. The sequence in the Cochran-Unicoi interval where the Precambrian-Cambrian boundary is interpreted to occur consists of coarse-grained braided-fluvial sediments. It may prove impossible to locate the boundary precisely because of a lack of marine facies, and the shelly microfossils it might have provided.

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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).