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	Billings, M.P., 1956 Geology of New Hampshire – Part 2, Bedrock Geology: New Hampshire Planning and Development Commission, Concord, 200 pp., map, scale 1:250,000.

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	Bobyarchick, A.R., and Glover, L., III, 1979, Deformation and metamorphism in the Hylas zone and adjacent parts of the eastern Piedmont in Virginia: Geological Society of America Bulletin, v. 90, no. 2, p. 739-752.

	Boone, G.M., and Boudette, E.L., 1989, Accretion of the Boundary Mountains terrane within the northern Appalachian orthotectonic zone, in Horton, J.W., Jr., and Rast, Nicolas, eds., Melanges and Olistostromes of the U.S. Appalachians: Geological Society of America Special Paper 228, p. 17-42.

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	Bothner, W.A., Boudette, E.L., Fagan, T.J., Gaudette, H.E., Laird, Jo, and Olszewski, W.J., 1984, Geologic framework of the Massabesic anticlinorium and the Merrimack trough, southeastern New Hampshire, in Hanson, L.S., ed., Geology of the coastal lowlands, Boston, MA to Kennebunk, ME: Guidebook, New England Intercollegiate Geologic Conference, 76th Ann. Meeting, Danvers, Massachusetts, p. 186-201.

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	Bramelett, K.W., Secor, D.T., Jr., and Prowell, D.C., 1982, The Belair Fault – a Cenozoic reactivation structure in the eastern piedmont: Geological Society of America Bulletin, v. 92, p. 1109-1117.

	Briggs, D.F., Gilbert, M.C., and Glover, L., III, 1978, Petrology and regional significance of the Roxboro metagranite, North Carolina: Geological Society of America Bulletin, v. 89, p. 511-521.

	Brown, W.R., Geology of the Dillwyn quadrangle, Virginia: Virginia Division of Mineral Resources Report of Investigations 10, 77 pp.

	Brown, W.R., 1970, Investigation of the sedimentary record in the Piedmont and Blue Ridge of Virginia, in Fisher, G.W., Pettijohn, F.J., Reed, J.C., Jr., and Weaver, K.N., eds., Studies of Appalachian Geology, Central and Southern, New York, Interscience Publishers, p. 335-349.

	Bryant, Bruce, and Reed, J.C., Jr., 1970a, Geology of the Grandfather Mountain window and vicinity, North Carolina and Tennessee: U.S. Geological Survey Professional Paper 615, 127 pp.

	Bryant, Bruce, and Reed, J.C., Jr., 1970b, Structural and metamorphic history of the southern Blue Ridge, in Fisher, G.W., Pettijohn, F.J., Reed, J.C., Jr., and Weaver, K.N., eds., Studies of Appalachian geology, central and southern: New York, Interscience Publishers, p. 213-235.

	Butler, J.R., and Ragland, P.C., 1969, Petrochemical survey of plutonic intrusions in the piedmont, southeastern Appalachians, U.S.A.: Contributions to Mineralogy and Petrology, v. 24, no. 2, p. 164-190.

	Cardwell, D.H., Erwin, R.B., and Woodward, H.P., compilers, 1968, Geologic Map of West Virginia: Morgantown, West Virginia Geologic and Economic Survey, map scale 1:250,000.

	Carpenter, P.A., III, 1982, Geologic map of Region G, North Carolina: North Carolina Department of Natural Resources and Development, Regional Geology Series 2, map scale about 1:126,000.

	Carpenter, R.H., Odom, A.L., and Hartley, M.E., III, 1982, Geochronological investigation of the Lincolnton metadacite, Georgia and South Carolina, in Bearce, D.N., and others, eds., Tectonic studies in the Talladega and Carolina slate belts, southern Appalachians: Geological Society of America Special Paper 191, p. 145-152.

	Clarke, J.W., 1952, Geology and mineral resources of the Thomaston quadrangle, Georgia: Georgia Geological Survey Bulletin 59, 99 pp.

	Cleaves, E.T., Edwards, Jonathan, Jr., and Glaser, J.D., 1968, Geologic Map of Maryland: Baltimore, Maryland Geological Survey, scale 1:250,000.

	Conley, J.F., 1978, Geology of the Piedmont of Virginia – interpretations and problems, in Contributions to Virginia Geology III: Virginia Division of Mineral Resources Publication 7, p. 115-149.

	Conley, J.F., 1985, Geology of the southwest Virginia Piedmont: Virginia Division of Mineral Resources Publication no. 59, 33 p.

	Conley, J.F., and Marr, J.D., Jr., 1980, Evidence for the correlation of the Kyanite Quartzites of the Willis and Woods Mountains with the Arvonia Formation, in Contributions to Virginia Geology – IV: Virginia Division of Mineral Resources Publication 27, p. 1-10.
	
	Doll, C.G., Cady, W.M., Thompson, J.B., Jr., and Billings, M.P., 1961, Centennial Geologic Map of Vermont:  Vermont Geological Survey, Montpelier, scale 1:250,000.

	Drake, A.A., Jr, Hall, L.M., and Nelson, A.E., Jr., 1988, Basement and basement-cover relation map of the Appalachian orogen in the United States:  U.S. Geological Survey Miscellaneous Investigation Series Map I-1655, (Preliminary Version, 2 sheets, scale 1:1,000,000).

	Espenshade, G.H., Rankin, D.W., Shaw, K.W., and Neuman, R.B., 1975, Geologic map of the east half of the Winston-Salem Quadrangle, North Carolina - Virginia:  U.S. Geological Survey Miscellaneous Investigation Series Map I-709B, scale 1:250,000.

	Fisher, D.W., Isachsen, Y.W., and Rickard, L.W., eds, 1970, Geologic Map of New York, Lower Hudson Sheet:  Albany, New York State Museum and Science Service, scale 1:250,000.

	Fisher, D.W., Isachsen, Y.W., and Rickard, L.W., eds, 1970, Geologic Map of New York, Hudson-Mohawk Sheet:  Albany, New York State Museum and Science Service, scale 1:250,000.
	
	Froelich, A.J., and others, 1981, Geology of the Culpeper Basin, Virginia and Maryland:  U.S. Geological Survey Miscellaneous Field Investigation Map I-1313-C, scale 1:125,000.

	Gair, J.E., and Slack, J.F., 1979, Map showing lithostratigraphic and structural setting of stratboud (massive) sulfide deposits in the U.S. Appalachians:  U.S. Geological Open-File Report 79-1517, 4 sheets, scale 1:1,000,000.

	Georgia Geological Survey, 1976, Geologic map of Georgia:  Atlanta, Georgia Geological Survey, scale 1:500,000.

	Goldsmith, Richard, Milton, D.J., and Wilson, F.A., 1978, Preliminary geologic map of the Charlotte two-degree sheet:  U.S. Geological Survey Open-File Report 79-590, scale 1:250,000.

	Goldsmith, Richard, Milton, D.J., and Horton, J.W., 1988, Geologic map of the Charlotte 1º by 2º Quadrangle, North Carolina and South Carolina:  U.S. Geological Survey Miscellaneous Investigation Series Map I-1251-E, scale 1:250,000.
	
	Hadley, J.B., and Nelson, A.E., 1971, Geologic map of the Knoxville quadrangle, North Carolina, Tennessee, and South Carolina:  U.S. Geological Survey Miscellaneous Field Investigations Map I-654, scale 1:250,000.

	Hardman, W.D., Miller, R.A., and Swingle, G.D., 1966, Geologic map of Tennessee:  Nashville, Tennessee Division of Geology, 4 sheets, scale 1:250,000.

	Harwood, D.S., 1979, Geologic Map of northeastern United States and adjacent Canada:  U.S. Geological Survey Open-File Report 79-374, 3 sheets, scale 1:1,000,000.

	Hatcher, R.D., Jr., 1980, Geologic map of the Prentiss quadrangle, North Carolina:  North Carolina Department of Natural Resources and Community Development, Geological Survey Section, Geologic Map GM 167 - SW, scale 1:24,000.

	Henika, W.S., and Thayer, P.A., 1977, Geology of the Blairs, Mount Herman, Danville and Ringgold Quadrangles, Virginia:  Virginia Division of Mineral Resources Publication no. 2., scale 1:24,000.

	Higgins, M.W., and Abrams, C.E., 1978, Preliminary geologic map of the Atlanta two-degree sheet:  U.S. Geological Survey Open-File Report 78-962, three sheets, scale 1:250,000.

	Isachsen, Y.W., and Fisher, D.W., 1970, Geologic Map of New York, Adirondack Sheet:  New York Museum and Science Service, Albany, New York, scale 1:250,000.

	Larabee, D.M., 1966, Map showing distribution of ultramafic and intrusive mafic rocks from northern New Jersey to eastern Alabama:  U.S. Geological Survey Miscellaneous Investigation Map I-476, scale 1:500,000.

	Lewis, J.V., and Kummel, H.B., 1910-12, Geologic map of New Jersey:  New Jersey Department of Conservation and Development Atlas sheet no. 40 (rev. 1931 by H.B. Kummel, 1950 by M.E. Johnson), scale 1:250,000.

	Lyttle, P.T., and Epstein, J.B., 1987, Geologic map of the Newark 1-degree by 2-degree quadrangle, Pennsylvania, New Jersey, and New York:  U.S. Geological Survey Miscellaneous Investigations Map I-1715, scale 1:250,000.

	Milici, R.C., Spiker, L.T., Jr., and Wilson, J.M., 1953, Geologic map of Virginia:  Charlottesville, Virginia Division of Mineral Resources, scale 1:500,000.

	Mixon, R.B., Southwick, D.L., and Reed, J.C., Jr., 1972, Geologic map of the Quantico quadrangle, Prince William and Stafford Counties, Virginia, and Charles County, Maryland:  U.S. Geological Survey Quadrangle Map GQ-1044, scale 1:24,000.

	Moench, R.H., ed., 1984, Geologic Map of the Sherbrooke - Lewiston area, Maine, New Hampshire, and Vermont:  U.S. Geological Survey Open-File Report 84-0650, 2 sheets, scale 1:250,000.

	Neathery, T.L., 1973, Geologic map of the crystalline rocks of Alabama:  Tuscaloosa, Geological Survey of Alabama Open File Map.

	Nelson, A.E., and Clarke, J.W., 1978, Preliminary geologic map of the Greenville quadrangle, North Carolina, South Carolina, and Georgia:  U.S. Geological Survey Open-File Report 78-503, scale 1:250,000, and unpublished mapping by A.E. Nelson - pers. comm. 1983.
	
	Nelson, A.E., Horton, J.W., Jr., and Clarke, J.W., 1987, Generalized tectonic map of the Greenville 1º by 2º Quadrangle, Georgia, South Carolina, and North Carolina:  U.S. Geological Survey Miscellaneous Field Studies Map MF-1898, scale 1:250,000.

	Nelson, A.E., Horton, J.W., Jr., and Clarke, J.W., 1989, Geologic map of the Greenville 1º by 2º quadrangle, Georgia, South Carolina, and North Carolina:  U.S. Geological Survey Open-File Report OF-89-9, scale 1:250,000.

	North Carolina Geological Survey, 1985, Geologic map of North Carolina:  North Carolina Department of Natural Resources and Community Development, Raleigh, North Carolina Geological Survey, scale 1:500,000.

	Osberg, P.H., Hussey, A.M., II, and Boone, G.M., 1985, Bedrock geologic map of Maine:  Maine Geological Survey, Augusta, Maine, scale 1:500,000.

	Osborne, W.E., Szabo, M.W., Neathery, T.W., and Copland, C.W., Jr., 1988, Geologic map of Alabama, northeast sheet:  Tuscaloosa, Geological Survey of Alabama, scale 1:250,000.

	Overstreet, William, and Bell, Henry, III, 1965, Geologic map of the crystalline rocks of South Carolina:  U.S. Geological Survey Miscellaneous Investigations Map I-413, scale 1:250,000; modified by mapping and compilation by Henry Bell, III, personal comm., 1984.

	Rankin, D.W., Espenshade, G.H., and Neuman, R.B., 1973, Geologic map of the west half of the Winston-Salem quadrangle, North Carolina, Virginia, and Tennessee:  U.S. Geological Survey Miscellaneous Investigations Map I-709A, scale 1:250,000.

	Rodgers, John, 1985, Bedrock Geological Map of Connecticut:  Connecticut Geological and Natural History Survey and U.S. Geological Survey, Hartford, Connecticut, scale 1:125,000.

	Seiders, V.M., and Mixon, R.B., 1981, Geologic map of the Occoquan quadrangle and part of the Fort Belvoir quadrangle, Prince William and Fairfax Counties, Virginia:  U.S. Geological Survey Miscellaneous Investigation Series Map I-1175, scale 1:24,000.

	Williams, Harold (compiler), 1978, Tectonic lithofacies map of the Appalachian orogen:  St. Johns, Memorial University of Newfoundland, scale 1:1,000,000.

	Wilson, W.F., and others, 1978, Geology of the Raleigh one-degree by two-degree quadrangle, North Carolina:  E.I. duPont de Nemoirs and Company, GJBX-51, 122p., scale 1:250,000.