Northeastern Section (39th Annual) and Southeastern Section (53rd Annual) Joint Meeting (March 25–27, 2004)
Session No. 20 Thursday, March 25, 2004
1:00 PM-5:00 PM, Hilton McLean Tysons Corner: Lord Thomas Fairfax Room

T4. Nature and Timing of Grenvillian Orogenesis in Eastern North America (pre-Cambrian) II

Richard P. Tollo and Louise Corriveau, Presiding
 Paper #Start Time
20-11:00 PM PETROLOGY AND GEOCHRONOLOGY OF GRENVILLE-AGE MAGMATISM, BLUE RIDGE PROVINCE, NORTHERN VIRGINIA: TOLLO, Richard P., Department of Earth and Environmental Sciences, George Washington Univ, Washington, DC 20052, rtollo@gwu.edu, ALEINIKOFF, John N., U.S. Geol Survey, Denver, CO 80225, and BORDUAS, Elizabeth A., Earth and Environmental Sciences, GWU, Washington, DC
20-21:20 PM A UNIFYING TECTONIC MODEL FOR THE BASEMENT CORE OF THE CENTRAL AND NORTHERN BLUE RIDGE OF VIRGINIA AND MARYLAND: BURTON, William C., U. S. Geological Survey, 425 Jordan Road, Troy, NY 12180, bburton@usgs.gov and SOUTHWORTH, C. Scott, U.S. Geol Survey, 926A National Center, Reston, VA 20192
20-31:40 PM AUGITE-INVERTED FERROPIGEONITE THERMOMETRY IN "CHARNOCKITIC" ROCKS OF THE GRENVILLIAN BLUE RIDGE, CENTRAL VIRGINIA: LIOGYS, Viktoras A. and TRACY, Robert J., Department of Geosciences, Virginia Polytechnic Institute and State Univ, 4044 Derring Hall, Blacksburg, VA 24061, vliogys@vt.edu
20-42:00 PM DECIPHERING MESOPROTEROZOIC AND PALEOZOIC EVENTS PRESERVED IN THE ISOTOPIC COMPOSITIONS OF ZIRCON AND TITANITE: SEM IMAGING, SHRIMP U-PB GEOCHRONOLOGY, AND EMP ANALYSIS: ALEINIKOFF, John N., U.S. Geol Survey, MS 963, Denver, CO 80225, jaleinikoff@usgs.gov, WINTSCH, Robert P., Department of Geological Sciences, Indiana Univ, 1001 East 10th Street, Bloomington, IN 47405, HORTON, J. Wright Jr, U.S. Geol Survey, MS 926A, Reston, VA 20192, DRAKE, Avery A., U.S. Geol Survey, MS 954, Reston, VA 20192, and FANNING, C. Mark, Research School of Earth Sciences, The Australian National Univ, Canberra, ACT, 0200, Australia
20-52:20 PM NEW U-PB ZIRCON EVIDENCE FOR PALEOZOIC (DEVONIAN) PROTOLITHS FOR METAIGNEOUS PORTIONS OF THE MAIDENS GNEISS, GOOCHLAND TERRANE, VIRGINIA: OWENS, Brent E., Department of Geology, College of William and Mary, Williamsburg, VA 23187, beowen@wm.edu, PENG, Zhan X., Department of Earth and Planetary Sciences, Washington Univ, St. Louis, MO 63130, TUCKER, Robert D., Department of Earth and Planetary Sciences, Washington Univ, St Louis, MO 63130, and SHIRVELL, Catherine R., Department of Geology, College of William & Mary, Williamsburg, VA 23187
 2:40 PM Break
20-63:00 PM PALEOZOIC (NOT MESOPROTEROZOIC) HIGH-GRADE METAMORPHISM IN THE GOOCHLAND TERRANE, VIRGINIA: NEW RESULTS FROM ELECTRON MICROPROBE DATING OF MONAZITE: SHIRVELL, Catherine R., Department of Geology, College of William & Mary, Williamsburg, VA 23187, crshir@wm.edu, TRACY, Robert J., Geological Sciences, Virginia Polytechnic Institute and State Univ, 4044 Derring Hall, Blacksburg, VA 24061, and OWENS, Brent E., Department of Geology, College of William and Mary, Williamsburg, VA 23187
20-73:20 PM NORTHERN ANCESTRY FOR THE GOOCHLAND TERRANE AS A DISPLACED FRAGMENT OF LAURENTIA: BARTHOLOMEW, Mervin J., Department of Earth Sciences, Univ of Memphis, Memphis, TN 38152, jbrthlm1@memphis.edu and TOLLO, Richard P., Department of Earth & Environmental Sciences, George Washington Univ, Washington, DC 20052
20-83:40 PM EVIDENCE FOR CONTINENT-CONTINENT COLLISION: STRUCTURAL ANALYSIS AND DETRITAL ZIRCON PROVENANCE IN THE WESTERN LLANO UPLIFT, CENTRAL TEXAS: LEVINE, Jamie S., Department of Geological Sciences, Univ of Texas at Austin, 1 University Station C-1100, Austin, TX 78712, levinejs@mail.utexas.edu and MOSHER, Sharon, Univ Texas - Austin, Dept Geological Sciences, Austin, TX 78712
20-94:00 PM KINEMATIC CONSTRAINTS ON RODINIA ASSEMBLY: LLANO UPLIFT, TEXAS: REESE, Joseph F., Geosciences, Edinboro Univ of Pennsylvania, Cooper Hall, Edinboro, PA 16444, jreese@edinboro.edu and MOSHER, Sharon, Univ Texas - Austin, Dept Geological Sciences, Austin, TX 78712
20-104:20 PM THE ~1 GA OAXACAN COMPLEX OF SOUTHERN MEXICO: AN ARC TERRANE ON THE AMAZONIAN MARGIN: KEPPIE, J. Duncan, Instituto de Geología, Universidad Nacional Autónoma de México, Mexico D.F, 04510, Mexico, duncan@servidor.unam.mx, SOLARI, Luigi A., UNAM - Ciudad Univ, Deleg Coyoacan, Mexico City, DF 04510, Mexico, ORTEGA-GUTIÉRREZ, Fernando, Geología Regional, UNAM, Instituto de Geología, Ciudad Universitaria, Delegación Coyoacán, México, 04510, Mexico, and DOSTAL, Jarda, Earth Sciences, St. Mary's Univ, Halifax, NS, Canada

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