2008 Joint Meeting of The Geological Society of America, Soil Science Society of America, American Society of Agronomy, Crop Science Society of America, Gulf Coast Association of Geological Societies with the Gulf Coast Section of SEPM

Session No. 212
Monday, 6 October 2008: 1:30 PM-5:30 PM

T77. Recent Advances in the Understanding of Adirondack and Southern Grenville Province Tectonics II: In Honor of James McLelland

GSA Structural Geology and Tectonics Division; Gulf Coast Association of Geological Societies


Graham B. Baird, Catherine Shrady and Bruce Selleck, Advocates
Paper #
Start Time
1:30 PM
Anatexis of Metapelites in the Adirondacks: The Importance of Shawinigan Orogenesis
BICKFORD, Marion E., Earth Sciences, Syracuse University, 204 Heroy Geology Laboratory, Syracuse, NY 13244-1070 and MCLELLAND, James M., Dept. of Geology, Colgate Univ, Hamilton, NY 13346-1398, mebickfo@syr.edu, mebickfo@syr.edu
1:45 PM
Timing of Metamorphism in the Adirondack Lowlands, New York State: Constraints from U-Pb Zircon and Monazite Geochronology
SELLECK, Bruce W., Dept. Geology, Colgate University, 13 Oak Drive, Hamilton, NY 13346, bselleck@mail.colgate.edu, bselleck@mail.colgate.edu
2:00 PM
Geochronology of Adirondack Pegmatites by LA-MC-ICP-MS
CHIARENZELLI, Jeffrey R.1, LUPULESCU, Marian2, JOHNSTON, Scott3, PULLEN, Alex3 and CHIARENZELLI, Joseph J.1, (1)Geology, St. Lawrence University, 149 Brown Hall, St. Lawrence University 23 Romoda Drive, Canton, NY 13617, (2)New York State Museum, Cultural Education Center, Albany, NY 12230, (3)Department of Geosciences, University of Arizona, Gould-Simpson Building #77, Tucson, AZ 85721, jchiarenzelli@stlawu.edu, jchiarenzelli@stlawu.edu
2:15 PM
New U-Pb Zircon Ages Reveal a Long-Lived Magmatic History for the Harvey-Cardiff Domain of the Composite Arc Belt of the Grenville Province In Ontario
EASTON, Robert Michael, Precambrian Geoscience Section, Ontario Geological Survey, 933 Ramsey Lake Road, 7th Floor, Sudbury, ON P3E 6B5, Canada and KAMO, Sandra L., Jack Satterly Geochronology Laboratory, Univ of Toronto, 22 Russell Street, Toronto, ON M5S 3B1, Canada, mike.easton@ontario.ca, mike.easton@ontario.ca
2:30 PM
New SHRIMP Ages for Grenville Rocks of the Northern Blue Ridge, Virginia and Maryland: Redefinition of Mesoproterozoic Magmatic and Metamorphic Events
ALEINIKOFF, John N., USGS, Denver Federal Center, MS 963, Denver, CO 80225, SOUTHWORTH, Scott, U.S. Geological Survey, 926A National Center, Reston, VA 20192-0001, TOLLO, Richard P., Geological Sciences Program, George Washington Univ, Washington, DC 20052, FANNING, C. Mark, Research School of Earth Sciences, Australian National Univ, Canberra, ACT 0200, Australia, BURTON, William C., U.S. Geological Survey, 926A National Center, Reston, VA 20192 and LYTTLE, Peter T., U.S. Geological Survey, 908 National Center, Reston, VA 20192, jaleinikoff@usgs.gov, jaleinikoff@usgs.gov
2:45 PM
Petrographic Evidence for Excess Silica in Antiperthitic Plagioclase of the Montpelier Anorthosite, Virginia, and a Link with Extensive Myrmekite Development
OWENS, Brent E.1, DYMEK, Robert F.2 and CLEMENT, Stephen C.1, (1)Department of Geology, College of William and Mary, Williamsburg, VA 23187, (2)Department of Earth and Planetary Sciences, Washington University, 1 Brookings Drive, St. Louis, MO 63130, beowen@wm.edu, beowen@wm.edu
3:00 PM
Timing of Mesoproterozoic Magmatism and Metamorphism in the Vicinity of Mount Rogers, Southwestern Virginia and Northwestern North Carolina: Implications for the Nature of Grenville-Age Orogenesis in the Southern Appalachians
TOLLO, Richard, Geological Sciences Program, George Washington University, Washington, DC 20052, ALEINIKOFF, John, U.S. Geol Survey, Denver, CO 80225, SOUTHWORTH, Scott, U.S. Geological Survey, 926A National Center, Reston, VA 20192-0001, WOODEN, Joe, USGS-Stanford Ion Microprobe Laboratory, Stanford University, Stanford, CA 94305, MAZDAB, Frank, USGS-Stanford Ion Microprobe Facility, Green Building, Rm 89, 367 Panama Street, Stanford, CA 94305-2220 and FANNING, Mark, Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia, rtollo@gwu.edu, rtollo@gwu.edu
3:15 PM
3:30 PM
Finding the Water for Partial Melting of the Lower Crust
SEAMAN, Sheila J.1, WILLIAMS, Michael L.1 and KOTEAS, Christopher2, (1)Geosciences, University of Massachusetts, 611 North Pleasant Street, Amherst, MA 01003, (2)Department of Geosciences, University of Massachusetts, Amherst, 611 North Pleasant Street, Amherst, MA 01003, sjs@geo.umass.edu, sjs@geo.umass.edu
3:45 PM
Proximal Facies of the 1.38 (?)- 1.33 Ga Carrizo Mountain Group, Trans-Pecos Texas
GRIMES, Stephen W., Department of Chemistry and Environmental Sciences, University of Texas at Brownsville, 80 Fort Brown, Brownsville, TX 78520, steve.grimes@utb.edu, steve.grimes@utb.edu
4:00 PM
Grenville Tectonics In Texas: A Diachronous Orogeny
MOSHER, Sharon1, DAVIS, Ben1 and GRIMES, Stephen W.2, (1)Department of Geological Sciences, Jackson School of Geosciences, The University of Texas at Austin, 1 University Station C1100, Austin, TX 78712-0254, (2)Department of Chemistry and Environmental Sciences, University of Texas at Brownsville, 80 Fort Brown, Brownsville, TX 78520, mosher@mail.utexas.edu, mosher@mail.utexas.edu
4:15 PM
Tectonic Evolution of the Western Grenville Orogen: Insight from Numerical Models for Syn- and Post-Convergent Flow of Heterogeneous Crust
JAMIESON, Rebecca A., Department of Earth Sciences, Dalhousie University, Halifax, NS B3H 4J1, Canada and BEAUMONT, Christopher, Department of Oceanography, Dalhousie University, Halifax, NS B3H 4J1, Canada, beckyj@dal.ca, beckyj@dal.ca
4:30 PM
Tectonics and Collisional Architecture of the Grenville Margins of Laurentia and Amazonia
VAN DER PLUIJM, Ben A., Geological Sciences/Environment, University of Michigan, 1100 N University Ave, Ann Arbor, MI 48109-1005 and TOHVER, Eric, School of Earth and Environment, University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia, vdpluijm@umich.edu, vdpluijm@umich.edu
4:45 PM
External Basement Massifs in the Northern Appalachians: The Link Between Rodinia and Pangea
KARABINOS, Paul, Dept. Geosciences, Williams College, Williamstown, MA 01267, pkarabin@williams.edu, pkarabin@williams.edu
5:00 PM
The Grenville Orogen, the Mirovoi Ocean and Their Paleozoic Legacies
MURPHY, J. Brendan, Department of Earth Sciences, St. Francis Xavier University, Antigonish, NS B2G 2W5, Canada and NANCE, R. Damian, Department of Geological Sciences, Ohio University, Athens, OH 45701, bmurphy@stfx.ca, bmurphy@stfx.ca
5:15 PM
Concluding Remarks
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