USGS Professional Pages
Supervisory GeologistContact Info
Randall Carroll Orndorff
Director, Eastern Geology and Paleoclimate Science Center
U.S. Geological Survey, MS926A National Center, 12201 Sunrise Valley Drive, Reston, VA 20192
Old Dominion University, Norfolk, Virginia
MS, Geology (1985)
Thesis: Conodont biostratigraphy of the Cambrian-Ordovician boundary interval in the northern Shenandoah Valley of Virginia, USA
BS, Geology (1983)
U.S. Geological Survey, Reston Virginia (1981-present)
Position: Director, Eastern Geology and Paleoclimate Science Center (2010-present)
Duties: Lead a team of 130 employees, mostly scientists who work on geologic mapping and framework, paleoclimate, landslide hazards, and volcano hazards; this includes international projects in Madagascar, Afghanistan, West Africa, Antarctica, and the Arctic.
Position: Associate Program Coordinator, National Cooperative Geologic Mapping Program (2002-2010)
Duties: Coordinated a multi-million dollar National program that supported geologic mapping in State geological surveys and universities; this included evaluation of geologic mapping proposals as well as geologic maps.
Secretary General for North and Central America, Commission for the Geologica Map of the World (2012 - present)
Member of the North American Commission on Stratigraphic Nomenclature (1998-present); chair (2003-2004)
Associate Editor for Geologic Maps, Journal of Maps, Taylor and Francis Publications, London (2005-present)
Member of the National Cave and Karst Research Institute Federal Working Group (2000-2004) and Board of Directors (2006-2009)
Chair of USGS Geologic Names Committee (2005-present)
Co-chair of the USGS Water Strategic Science Planning Team (2010-2012)
Geological Society of America
American Institute of Professional Geologists
Geological Society of Washington
National Speleological Society
Association of Missouri Geologists
Orndorff, R.C., 1988, Latest Cambrian and earliest Ordovician conodonts from the Conococheague and Stonehenge Limestones of northwestern
Orndorff, R.C., Harris, A.G., and Schultz, A.P., 1988, Reevaluation of conodont color alteration patterns in Ordovician rocks, east-central Valley and Ridge and western
Orndorff, R.C., 1992, Tectonic significance of cross-strike faults in the central Appalachian Great Valley of Maryland and
Orndorff, R.C., Epstein, J.B., and McDowell, R.C., 1999, Geologic map of the Middletown quadrangle, Frederick, Shenandoah, and Warren Counties, Virginia: U.S. Geological Survey Geologic Quadrangle Map GQ-1803, scale 1:24,000.
Orndorff, R.C., editor, 1999, Bedrock geologic map of central and southern
Orndorff, Randall C. and Harrison, R.W., 2001, Geologic map of the
Orndorff, R.C., and Harlow, G.E., 2002, Geohydrologic framework of the northern Shenandoah Valley carbonate aquifer system, in, Kuniansky, E.L., U.S. Geological Survey Karst Interest Group Workshop Proceedings,
Orndorff, R.C., Weary, D.J., and Sebela, Stanka, 2003, Geologic framework of the Ozarks of south-central
Orndorff, R.C., 2004, Geologic map of the
Orndorff, R.C., Weary, D.J., and Harrison, R.W., 2006, The role of sandstone in the development of an Ozark karst system, south-central Missouri, in Harmon, R.S., and Wicks, C., eds., Perspectives on karst geomorphology, hydrology, and geochemistry-A tribute volume to Derek C. Ford and William B. White: Geological Society of America Special Paper 404, p. 31-38.
Orndorff, R.C. and Weary, D.J., 2009, Geologic map of the Round Spring quadrangle, Shannon County, Missouri: U.S. Geological Survey Scientific Investigations Map 3073, scale 1:24,000.
Orndorff, R.C., Lyttle, P.T., Bybell, L.M., and Quintana, Lydia, 2008, The National Cooperative Geologic Mapping Program and insight into the future of geologic map production, in, Soller, D.R., ed, Digital mapping techniques ’07-Workshop proceedings: U.S. Geological Survey Open-file Report, 2008-1385, p. 47-52.
Orndorff, R.C.(ed.), 2009, Set in stone – The work of the National Commission on Stratigraphic Nomenclature: Stratigraphy, v. 6, no. 2, p. 89.
U.S. Geological Survey Geologic Names Committee (Orndorff, R.C., Chair and preparer), 2010, Divisions of geologic time—Major chronostratigraphic and geochronologic units: U.S. Geological Survey Fact Sheet 2010-3059, 2 p.
Orndorff, R.C., 2012, Fold-to-fault progression of a major thrust zone revealed in horses of the North Mountain fault zone, Virginia and West Virginia, USA: Journal of Geological Research, v. 2012, article 294093, 13 p. http://www.hindawi.com/journals/jgr/2012/294093/
My Science Topics
Appalachian and Ozarks geology, stratigraphy, structure, geologic mapping, karst
12201 Sunrise Valley Dr
Reston, VA 20192-0002
703-648-6953 - Fax
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