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Southeastern Section–55th Annual Meeting (23–24 March 2006)

Session No. 25
Friday, 24 March 2006: 8:00 AM-12:00 PM

S1. New Geochronologic and Isotopic Approaches to Constraining Appalachian Tectonics

GSA Structural Geology and Tectonics Division

 

R.J. Tracy, Calvin F. Miller and Brent V. Miller, Conveners
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
MORE GEOCHRONOLOGIC EVIDENCE FOR POLYPHASE 1250-950 MA THERMOTECTONISM IN THE ADIRONDACK LOWLANDS, NEW YORK
HUDSON, Michael R.1, DAHL, Peter S.2, LOEHN, Clayton W.3, TRACY, Robert J.3 and PUNCKE, Megan K.3, (1)Department of Chemistry, Geology, and Physics, Ashland Univ, Ashland, OH 44805, (2)Department of Geology, Kent State Univ, Kent, OH 44242, (3)Geosciences, Virginia Tech, Blacksburg, VA 24061, mhudson@ashland.edu, mhudson@ashland.edu
2
8:25 AM
REVISED DISTRIBUTION OF GRENVILLIAN TERRANES OF THE APPALACHIANS
BARTHOLOMEW, Mervin J., Earth Sciences, Univ of Memphis, Memphis, TN 38152, jbrthlm1@memphis.edu, jbrthlm1@memphis.edu
3
8:45 AM
AN EXOTIC BLUE RIDGE BASEMENT: NEW ISOTOPIC EVIDENCE
FISHER, Christopher M.1, LOEWY, Staci2, BERQUIST, Peter J.1, MILLER, Calvin1, HATCHER, Robert D.3, VAN SCHMUS, W.R.4, FULLAGAR, Paul D.2 and WOODEN, Joe5, (1)Earth and Environmental Sciences, Vanderbilt Univ, VU Station B #351805, 2301 Vanderbilt Place, Nashville, TN 37235-1805, (2)Department of Geological Sciences, The University of North Carolina, Chapel Hill, NC 27599-3315, (3)Univ of Tennessee, Knoxville, TN, (4)Geology, Univ of Kansas, 120 Lindley Hall, Lawrence, KS 66045, (5)U.S. Geol Survey, 345 Middlefield Road, Menlo Park, CA 94025, christopher.m.fisher@vanderbilt.edu, christopher.m.fisher@vanderbilt.edu
4
9:05 AM
GRENVILLE ZIRCON FERTILITY AND BABY BOOM; NATURAL BIAS IN THE APPALACHIAN DETRITAL ZIRCON RECORD
MOECHER, D.P., Earth and Env. Sci, Univ. Kentucky, 101 Slone Bldg, Lexington, KY 40506-0053 and SAMSON, Scott D., Department of Earth Sciences, Syracuse Univ, Syracuse, NY 13244, moker@uky.edu, moker@uky.edu
5
9:25 AM
EXAMINING THE ROLE OF EXTENSIONAL ACCRETIONARY OROGENESIS IN THE SOUTHERNMOST APPALACHIAN BLUE RIDGE: ISOTOPIC, GEOCHRONOLOGIC AND GEOCHEMICAL EVIDENCE
HOLM, Christopher S., Department of Geological Sciences and National High Magnetic Field Laboratory- Geochemistry Division, The Florida State Univ, 108 Carraway Building, Tallahassee, FL 32306-4100, DAS, Reshmi, Department of Geological Sciences and National High Magnetic Field Laboratory- Geochemistry Division, Florida State Univ, 108 Carraway Building, Tallahassee, FL 32306-4100, BARINEAU, Clinton I., Department of Geological Sciences, The Florida State University, 108 Carraway Building, Tallahassee, FL 32306-4100 and TULL, James F., Department of Geological Sciences, Florida State University, Tallahassee, FL 32306, holm@gly.fsu.edu, holm@gly.fsu.edu
 
9:45 AM
Break
6
10:00 AM
PROVENANCE OF CENTRAL AND WESTERN BLUE RIDGE PARAGNEISSES, SOUTHWESTERN NORTH CAROLINA
MERSCHAT, Arthur J., Department of Earth and Planetary Sciences, University of Tennessee, 306 Earth and Planetary Sciences Bldg, Knoxville, TN 37996, HATCHER Jr, Robert D., Earth and Planetary Sciences, University of Tennessee-Knoxville, 306 Earth and Planetary Sciences Bldg, Knoxville, TN 37996-1410, MILLER, Calvin F., Earth and Environmental Sciences, Vanderbilt University, 117 Sta B, Nashville, TN 37235 and WOODEN, Joseph L., U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, arthurmerschat@hotmail.com, arthurmerschat@hotmail.com
7
10:20 AM
GEOCHRONOLOGICAL CONSTRAINTS ON THE EMPLACEMENT OF BASEMENT UPLIFTS IN THE NORTHERN APPALACHIANS
KARABINOS, Paul1, MORRIS, David1, GORDON, Ryan P.1 and PYLE, Joseph2, (1)Dept. Geosciences, Williams College, Williamstown, MA 01267, (2)Earth and Environmental Sciences, Rensselaer Polytechnic Institute, 110 8th St, Troy, NY 12180, pkarabin@williams.edu, pkarabin@williams.edu
8
10:40 AM
PINE MOUNTAIN TERRANE: GEOCHEMISTRY AND GEOCHRONOLOGY OF BASEMENT GNEISSES AND XENOLITHS
HEATHERINGTON, Ann L.1, MUELLER, Paul A.1, KAMENOV, George1, STELTENPOHL, Mark G.2, HANLEY, Thomas B.3 and WOODEN, Joseph L.4, (1)Department of Geological Sciences, University of Florida, Box 112120, Gainesville, FL 32611, (2)Department of Geology and Geography, Auburn University, Petrie Hall, Auburn, AL 36849, (3)Department of Chemistry and Geology, Columbus State University, 4225 University Ave, Columbus, GA 31907, (4)U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, aheath@geology.ufl.edu, aheath@geology.ufl.edu
9
11:00 AM
THE SMITH RIVER ALLOCHTHON-LYNCHBURG GROUP CONTACT, REVISITED: DOES IT REPRESENT CLOSURE OF THE IAPETUS OCEAN OR A LAURENTIAN RIFT-BASIN?
CARTER, Brad T.1, LOEHN, Clayton W.2 and BOX, Gordon1, (1)Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, (2)Geosciences, Virginia Tech, Blacksburg, VA 24061, btcarter@ncsu.edu, btcarter@ncsu.edu
10
11:20 AM
SHRIMP VERSUS ELECTRON MICROPROBE MONAZITE AGES: DIRECT COMPARISON OF ISOTOPIC VS CHEMICAL DATING, AND THE IMPLICATIONS FOR GEOLOGIC INTERPRETATION
TRACY, Robert J. and LOEHN, Clayton W., Geosciences, Virginia Tech, Blacksburg, VA 24061, rtracy@vt.edu, rtracy@vt.edu
11
11:40 AM
THE ACATLÁN COMPLEX OF SOUTHERN MEXICO: ALLEGHANIAN OVERPRINT OF RHEIC OCEAN VESTIGES
MILLER, Brent V., Department of Geology and Geophysics, Texas A & M, College Station, TX 77843, NANCE, R. Damian, Dept. of Geological Sciences, Ohio Univ, Athens, OH 45701, KEPPIE, J. Duncan, Instituto de Geología, Universidad Nacional Autónoma de México, México DF, 04510 and MURPHY, J. Brendan, Dept. of Earth Sciences, St. Francis Xavier University, Antigonish, NS B2G2W5, Canada, bvmiller@geo.tamu.edu, bvmiller@geo.tamu.edu
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