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Map showing publication footprint
  • Usage in publication:
    • Buffards Formation
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Schist
    • Phyllite
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Brown, W.R., 1969, Geology of the Dillwyn quadrangle, Virginia: Virginia Division of Mineral Resources Report of Investigations, no. 10, 77 p.


Summary:

Pg. 32-35, 48. Buffards Formation. A conglomeratic quartz-muscovite schist and phyllite. Stretched-pebble and bedding cleavage lineations indicate synclinal structure. Forms ridges in northeast-southwest-trending belt. Thickness 460 m. Unconformably overlies the Arvonia Formation. Upper contact is not exposed. Age is Silurian.
Type locality: Buffards Mountain, at summit near water tower, 5.6 km northwest of Dillwyn, Buckingham Co., central VA.

Source: US geologic names lexicon (USGS Bull. 1520, p. 42).


Map showing publication footprint
  • Usage in publication:
    • Buffards Formation
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Evans, N.H., and Marr, J.D., Jr., 1988, Geology and the slate industry in the Arvonia district, Buckingham County, Virginia: Virginia Division of Mineral Resources, Virginia Minerals, v. 34, no. 4, p. 37-44.


Summary:

Pg. 39. Rocks of Buffards Formation (Brown, 1969) are reallocated to Arvonia Formation. [See entry under Arvonia.]

Source: Publication.


Map showing publication footprint
  • Usage in publication:
    • Buffards Conglomerate Member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Glover, Lynn, III (leader), 1989, Tectonics of the Virginia Blue Ridge and Piedmont; Culpeper to Richmond, Virginia; guidebook to field trip T363: International Geological Congress, 28th, Field Trip Guidebook, Washington, DC, 1989, T363, p. 1-59.


Summary:

Pg. 23. Buffards Conglomerate Member of Arvonia Formation. Assigned member status in basal part of formation. Age is Middle(?) or Late Ordovician.

Source: GNC index card files (USGS-Reston).


Map showing publication footprint
  • Usage in publication:
    • Buffards Formation
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Rader, E.K., and Evans, N.H., 1993, Geologic map of Virginia; expanded explanation: Virginia Division of Mineral Resources, 80 p.


Summary:

Buffards Formation includes greenish-gray conglomeratic quartzose muscovite schist containing ellipsoidal clasts of milky quartz, dusky-red quartzite, dark-gray aphanitic rock, and greenish-gray phyllite; greenish-gray chlorite-muscovite schist with medium to fine, grayish-blue quartz grains; grayish-green chlorite-muscovite phyllite; and biotite-muscovite-quartz schist. Contains tuffaceous and ferruginous-quartzite clasts similar to rocks that occur in the unconformably underlying Chopawamsic Formation. Interpreted as submarine fan channel deposit. Age is Ordovician.

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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