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

Thursday, 25 March 2004
1:00 PM - 5:00 PM

Presentations

• 1:00 PM
  PETROLOGY AND GEOCHRONOLOGY OF GRENVILLE-AGE MAGMATISM, BLUE RIDGE PROVINCE, NORTHERN VIRGINIA
  Richard P. Tollo, George Washington Univ, Washington, DC and John N. Aleinikoff, U.S. Geol Survey, Denver, CO and Elizabeth A. Borduas, GWU, Washington, DC
  69016 (THEME SESSIONS)
• 1:20 PM
  A UNIFYING TECTONIC MODEL FOR THE BASEMENT CORE OF THE CENTRAL AND NORTHERN BLUE RIDGE OF VIRGINIA AND MARYLAND
  William C. Burton, Troy, NY and C. Scott Southworth, U.S. Geol Survey, Reston, VA
  69246 (THEME SESSIONS)
• 1:40 PM
  AUGITE-INVERTED FERROPIGEONITE THERMOMETRY IN "CHARNOCKITIC" ROCKS OF THE GRENVILLIAN BLUE RIDGE, CENTRAL VIRGINIA
  Viktoras A. Liogys, Virginia Polytechnic Institute and State Univ, Blacksburg, VA and Robert J. Tracy, Virginia Polytechnic Institute and State Univ, Blacksburg, VA
  70514 (THEME SESSIONS)
• 2:00 PM
  DECIPHERING MESOPROTEROZOIC AND PALEOZOIC EVENTS PRESERVED IN THE ISOTOPIC COMPOSITIONS OF ZIRCON AND TITANITE: SEM IMAGING, SHRIMP U-PB GEOCHRONOLOGY, AND EMP ANALYSIS
  John N. Aleinikoff, U.S. Geol Survey, Denver, CO and Robert P. Wintsch, Indiana Univ, Bloomington, IN and J. Wright Horton, U.S. Geol Survey, Reston, VA and Avery A. Drake, U.S. Geol Survey, Reston, VA and C. Mark Fanning, The Australian National Univ, Canberra, ACT, N/A
  70474 (THEME SESSIONS)
• 2:20 PM
  NEW U-PB ZIRCON EVIDENCE FOR PALEOZOIC (DEVONIAN) PROTOLITHS FOR METAIGNEOUS PORTIONS OF THE MAIDENS GNEISS, GOOCHLAND TERRANE, VIRGINIA
  Brent E. Owens, College of William and Mary, Williamsburg, VA and Zhan X. Peng, Washington Univ, St. Louis, MO and Robert D. Tucker, Washington Univ, St Louis, MO and Catherine R. Shirvell, College of William & Mary, Williamsburg, VA
  70874 (THEME SESSIONS)
• 3:00 PM
  PALEOZOIC (NOT MESOPROTEROZOIC) HIGH-GRADE METAMORPHISM IN THE GOOCHLAND TERRANE, VIRGINIA: NEW RESULTS FROM ELECTRON MICROPROBE DATING OF MONAZITE
  Catherine R. Shirvell, College of William & Mary, Williamsburg, VA and Robert J. Tracy, Virginia Polytechnic Institute and State Univ, Blacksburg, VA and Brent E. Owens, College of William and Mary, Williamsburg, VA
  70811 (THEME SESSIONS)
• 3:20 PM
  NORTHERN ANCESTRY FOR THE GOOCHLAND TERRANE AS A DISPLACED FRAGMENT OF LAURENTIA
  Mervin J. Bartholomew, Univ of Memphis, Memphis, TN and Richard P. Tollo, George Washington Univ, Washington, DC
  70595 (THEME SESSIONS)
• 3:40 PM
  EVIDENCE FOR CONTINENT-CONTINENT COLLISION: STRUCTURAL ANALYSIS AND DETRITAL ZIRCON PROVENANCE IN THE WESTERN LLANO UPLIFT, CENTRAL TEXAS
  Jamie S. Levine, Univ of Texas at Austin, Austin, TX and Sharon Mosher, Univ Texas - Austin, Austin, TX
  70878 (THEME SESSIONS)
• 4:00 PM
  KINEMATIC CONSTRAINTS ON RODINIA ASSEMBLY: LLANO UPLIFT, TEXAS
  Joe Reese, 151 Fieldstone Way Geosciences Dept, Erie, PA and Sharon Mosher, Univ Texas - Austin, Austin, TX
  70041 (THEME SESSIONS)
• 4:20 PM
  THE ~1 GA OAXACAN COMPLEX OF SOUTHERN MEXICO: AN ARC TERRANE ON THE AMAZONIAN MARGIN
  J. Duncan Keppie, Universidad Nacional Autónoma de México, Mexico D.F, N/A and Luigi A. Solari, UNAM - Ciudad Univ, Mexico City, DF and Fernando Ortega-Gutiérrez, UNAM, Instituto de Geología, México, N/A and Jarda Dostal, St. Mary's Univ, Halifax, NS
  68880 (THEME SESSIONS)