U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Floyd Church Member*
  • Modifications:
    • Named
  • Dominant lithology:
    • Argillite
    • Siltstone
  • 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:

Floyd Church named as basal member of Millingport Formation (new) in Davidson Co., central NC. Unit is composed of gray argillite and siltstone. Thickness ranges from 900 to 1800 m. Overlies Flat Swamp Member of Cid Formation (both new) and conformably underlies Yadkin Member of Millingport. Age is Ordovician(?).

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


Map showing publication footprint
  • Usage in publication:
    • Floyd Church Member*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Stromquist, A.A., and Sundelius, H.W., 1975, Interpretative geologic map of the bedrock, showing radioactivity, and aeromagnetic map of the Salisbury, Southmont, Rockwell, and Gold Hill quadrangles, Rowan and Davidson Counties, central North Carolina: U.S. Geological Survey Miscellaneous Investigations Series Map, I-888, 2 sheets, scale 1:48,000


Summary:

Age of the Floyd Church Member of the Millingport Formation changed from Ordovician(?) to Cambrian.

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


Map showing publication footprint
  • Usage in publication:
    • Floyd Church Member
  • Modifications:
    • Biostratigraphic dating
    • Age modified
Publication:

Seiders, V.M., and Wright, J.E., 1977, Geology of the Carolina volcanic slate belt in the Asheboro, North Carolina area: Geological Society of America, Southeastern Section, Guidebook for Field Trips, [26th] annual meeting, Winston-Salem, NC, p. 1-34.


Summary:

Middle Cambrian age for the Floyd Church Member of the Millingport Formation determined from trilobites. Unit consists mostly of mudstone. Underlies Yadkin member.

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


Map showing publication footprint
  • Usage in publication:
    • Floyd Church Member*
  • Modifications:
    • Geochronologic dating
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Rankin, D.W., Stern, T.W., McLelland, James, Zartman, R.E., and Odom, A.L., 1983, Correlation chart for Precambrian rocks of the Eastern United States, IN Harrison, J.E., and Peterman, Z.E., eds., Correlation of Precambrian rocks of the United States and Mexico: U.S. Geological Survey Professional Paper, 1241-E, p. E1-E18.


Summary:

Rb-Sr age of 540+/-7 m.y. obtained on andesitic tuff in Floyd Church Member of Millingport Formation.

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


Map showing publication footprint
  • Usage in publication:
    • Floyd Church Formation*
  • Modifications:
    • Revised
    • Age modified
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Milton, D.J., 1984, Revision of the Albemarle Group, North Carolina, IN Stratigraphic notes, 1983: U.S. Geological Survey Bulletin, 1537-A, p. A69-A72.


Summary:

Millingport Formation abandoned and its Floyd Church and Yadkin Members raised to formation status and assigned to Albemarle Group. Age of Albemarle and its four formations (Tillery, Cid, Floyd Church, and Yadkin) changed to latest Proterozoic on the basis of the fossil PTERIDINIUM, diagnostic of Vendian-Ediacaran fauna, from the middle or upper Floyd Church. This trilobite had previously been misidentified as Cambrian. A U/Pb concordia-intercept date of 586+/-10 Ma for zircons in the upper Uwharrie Formation, which underlies the Albemarle, sets a maximum age limit for the Group.

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


Map showing publication footprint
  • Usage in publication:
    • Floyd Church Formation
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Brown, P.M. (chief geologist), 1985, Geologic map of North Carolina: North Carolina Geological Survey, scale 1:500,000


Summary:

Floyd Church Formation shown as Late Proterozoic and Cambrian on NC State map. Albemarle Group not used.

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


Map showing publication footprint
  • Usage in publication:
    • Floyd Church Member
  • Modifications:
    • Revised
  • 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 terminology established by Conley and Bain (1965) as modified by Gibson and Teeter (1984: Carolina Geological Society Field Trip Guidebook). Floyd Church is assigned as upper member to McManus Formation, which is reinstated. Flat Swamp Member is not present in study area but lies between upper and lower members of McManus elsewhere. Cid Formation not used. Floyd Church includes strata within and adjacent to Gold Hill shear zone previously assigned to Tillery Formation by Sundelius and Stromquist (1978). Gradationally overlies unnamed mudstone member; gradationally underlies Yadkin Graywacke. Age not stated.

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


Map showing publication footprint
  • Usage in publication:
    • Floyd Church Formation*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Rankin, D.W. (editor), Chiarenzelli, J.R., Drake, A.A., Jr., Goldsmith, Richard, Hall, L.M., Hinze, W.J., Isachsen, Y.W., Lidiak, E.G., McLelland, James, Mosher, Sharon, Ratcliffe, N.M., Secor, D.T., Jr., and Whitney, P.R., 1993, Proterozoic rocks east and southeast of the Grenville Front, IN Reed, J.C., Jr., and others, eds., Precambrian; conterminous U.S.: Geological Society of America, The Geology of North America, The Decade of North American Geology (DNAG), v. C-2, p. 335-461.


Summary:

Ediacaran fossils found in Floyd Church Formation in upper part of Albemarle Group indicate a Late Proterozoic age (Gibson and others, 1984; Gibson and Teeter, 1984).

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


Search archives

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 ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 04 Apr 2024 03:19:59 PM MDT