Piedmontia

Basement domain in the Southeastern Laurentia and Appalachians

Geologic information

Region Southeastern Laurentia and Appalachians
Alternate names Peri-Laurentia
Crust
Formation age: 1000-416 Ma
Accretion
Type: Collisional
Age: Devonian and younger
Notes Laurentian origin, Neoproterozoic-Silurian (or younger)

Geographic extent

Autauga, Butler, Chambers, Chilton, Clarke, Clay, Coosa, Dallas, Elmore, Lee, Lowndes, Macon, Montgomery, Randolph, Tallapoosa, Washington, Wilcox, Fairfield, Hartford, Litchfield, New Haven, New Castle, Banks, Barrow, Bartow, Butts, Carroll, Cherokee, Clarke, Clayton, Cobb, Coweta, Crawford, Dawson, DeKalb, Douglas, Elbert, Fannin, Fayette, Forsyth, Franklin, Fulton, Greene, Gwinnett, Habersham, Hall, Haralson, Harris, Hart, Heard, Henry, Jackson, Jasper, Lamar, Lumpkin, Madison, Meriwether, Morgan, Newton, Oconee, Oglethorpe, Paulding, Pike, Rabun, Rockdale, Spalding, Stephens, Talbot, Towns, Troup, Union, Upson, Walton, White, Aroostook, Franklin, Oxford, Piscataquis, Somerset, Baltimore, Carroll, Cecil, Harford, Howard, Montgomery, Prince George's, Baltimore, Berkshire, Franklin, Hampden, Hampshire, Cheshire, Coos, Grafton, Mercer, Middlesex, Union, Kings, New York, Richmond, Alexander, Alleghany, Ashe, Avery, Buncombe, Burke, Caldwell, Caswell, Catawba, Clay, Cleveland, Davidson, Davie, Forsyth, Gaston, Guilford, Haywood, Henderson, Iredell, Jackson, Lincoln, McDowell, Macon, Madison, Person, Polk, Rockingham, Rutherford, Stokes, Surry, Transylvania, Watauga, Wilkes, Yadkin, Yancey, Bucks, Chester, Delaware, Philadelphia, Abbeville, Anderson, Cherokee, Greenville, Laurens, Oconee, Pickens, Spartanburg, Johnson, Caledonia, Essex, Lamoille, Orange, Orleans, Rutland, Washington, Albemarle, Appomattox, Arlington, Bedford, Buckingham, Carroll, Charlotte, Culpeper, Cumberland, Fairfax, Fauquier, Floyd, Fluvanna, Goochland, Halifax, Henry, Loudoun, Louisa, Orange, Patrick, Pittsylvania, Prince Edward, Prince William, Stafford, Danville, Fairfax, Falls Church, Fredericksburg, Galax, Manassas, Manassas Park, Martinsville

Bibliographic references

Horton, J.W., Jr., Drake, A.A., Jr., and Rankin, D.W., 1989, Tectonostratigraphic terranes and their Paleozoic boundaries in the central and southern Appalachians, in Dallmeyer, R.D., ed., Terranes in the Circum-Atlantic Paleozoic orogens: Geological Society of America Special Paper 230, p. 213–245.Horton, J.W., Jr., Drake, A.A., Jr., and Rankin, D.W., 1989, Tectonostratigraphic terranes and their Paleozoic boundaries in the central and southern Appalachians, in Dallmeyer, R.D., ed., Terranes in the Circum-Atlantic Paleozoic orogens: Geological Society of America Special Paper 230, p. 213–245.Tull, J.F., Holm-Denoma, C.S., and Barineau, C.I., 2014, Early to Middle Ordovician back-arc basin in the southern Appalachian Blue Ridge: Characteristics, extent, and tectonic significance: Geological Society of American Bulletin, v. 126, p. 990–1015, doi:10.1130/B30967.1.Horton, J.W., Jr., Aleinikoff, J.N., Drake, A.A., Jr., and Fanning, C.M., 2010, Ordovician volcanic-arc terrane in the central Appalachian Piedmont of Maryland and Virginia—SHRIMP U-Pb geochronology, field relations, and tectonic significance, in Tollo, R.P., Bartholomew, M.J., Hibbard, J.P., and Karabinos, P.M., eds., From Rodinia to Pangea—The lithotectonic record of the Appalachian region: Geological Society of America Memoir 206, p. 621–660.Drake, A.A., Jr., 1989, Metamorphic rocks of the Potomac terrane in the Potomac Valley of Virginia and Maryland, in International Geological Congress, 28th, Field Trip Guidebook T202: Washington, D.C., American Geophysical Union, 22 p.