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Geologic Unit: McManus
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Map showing publication footprint
  • Usage in publication:
    • McManus Formation
  • Modifications:
    • Named
  • Dominant lithology:
    • Tuff
    • Argillite
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Conley, J.F., and Bain, G.F., 1965, Geology of the Carolina Slate belt west of the Deep River-Wadesboro Triassic basin, North Carolina: Southeastern Geology, v. 6, no. 3, p. 117-138.


Summary:

McManus Formation of Albemarle Group named in central NC. Consists predominantly of felsic tuffaceous argillite, but also contains felsic-crystal, lithic-crystal tuff, and felsic lithic tuff. Maximum thickness 10,000 ft. Overlies Tillery Formation (new); conformably underlies Yadkin Graywacke (new). Name replaces Monroe slate of Nitze and Hanna (1896). Age is early Paleozoic.

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


Map showing publication footprint
  • Usage in publication:
    • McManus†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Stromquist, A.A., and Sundelius, H.L., 1969, Stratigraphy of the Albemarle Group of the Carolina slate belt in central North Carolina, IN Contributions to stratigraphy, 1968: U.S. Geological Survey Bulletin, 1274-B, 22 p.


Summary:

McManus Formation of Albemarle Group abandoned. Albemarle redefined to include ascending Tillery Formation, Cid Formation, and Millingport Formation (new).

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


Map showing publication footprint
  • Usage in publication:
    • McManus Formation
  • Modifications:
    • Reinstated
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Gibson, G.G., and Huntsman, J.R., 1988, Re-examination of the Gold Hill shear zone, Cabarrus and Stanly County area, south-central North Carolina: Southeastern Geology, v. 29, no. 1, p. 51-64.


Summary:

Authors adopt a modified version of the terminology established by Conley and Bain (1965). McManus Formation of Albemarle Group is reinstated and divided into a lower mudstone member (equivalent to Cid Formation of Stromquist and Sundelius, 1969) and the overlying and interfingering Floyd Church Member. Overlies Tillery Formation and gradationally underlies Yadkin Graywacke. Age not stated.

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


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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 ([ ]).

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