Session No. 6 Thursday, April 5, 2001

8:15 AM-12:00 PM, Sheraton Capital Center Hotel: Governor's Room II
S4. Advances in Geochronology and Thermochronology in the Appalachian Orogen
Brent Miller and Scott Samson, Presiding
Start Time
8:15 AM Introductory Remarks
8:20 AM 40AR/39AR DATA FROM THE WESTERN BLUE RIDGE AND THEIR IMPLICATIONS FOR TIMING OF METAMORPHISM: STELTENPOHL, Mark G.1, HAMES, Willis E.1, KUNK, Michael J.2, and MIES, Jonathan W.3, (1) Auburn, AL 36849, steltmg@auburn.edu, (2) USGS, MS 974, Box 25046, DFC, Denver, CO 80225, (3) Univ Tennessee–Chattanooga, 615 McCallie Ave, Chattanooga, TN 37403-2504
8:40 AM APPLICATIONS OF LASER 40AR/39AR DATING TO STUDIES OF APPALACHIAN METAMORPHIC EVOLUTION, EXAMPLES FROM NEW ENGLAND AND THE SOUTHWESTERN BLUE RIDGE: HAMES, Willis E.1, STELTENPOHL, Mark G.1, and TRACY, Robert J.2, (1) Department of Geology, Auburn Univ, 210 Petrie Hall, Auburn, AL 36849, hameswe@auburn.edu, (2) Geological Sciences, Virginia Tech, Blacksburg, VA 24061-0420
9:00 AM ION MICROPROBE ANALYSES OF ZIRCON RIMS FROM THE EASTERN BLUE RIDGE AND INNER PIEDMONT, NC-SC-GA: IMPLICATIONS FOR THE TIMING OF PALEOZOIC METAMORPHISM IN THE SOUTHERN APPALACHIANS: CARRIGAN, Charles W.1, BREAM, Brendan R.2, MILLER, Calvin F.3, and HATCHER, Robert D.2, (1) Department of Geological Sciences, Univ. of Michigan, 2534 C.C. Little Bldg, 425 E. University Ave, Ann Arbor, MI 48109-1063, cwcarrig@umich.edu, (2) Department of Geological Sciences, Univ. of Tennessee, 306 Geology Building, Knoxville, TN 37996-1410, (3) Department of Geology, Vanderbilt Univ, P.O. Box 35-1805 Station B, Nashville, TN 37235
9:20 AM TIMING OF GRENVILLE-AGE MAGMATISM AND DEFORMATION, BLUE RIDGE PROVINCE, CENTRAL VIRGINIA: TOLLO, Richard P., Department of Earth and Environmental Sciences, George Washington Univ, Washington, DC 20052, rtollo@gwu.edu and ALEINIKOFF, John N., U.S. Geol Survey, Denver, CO 80225
9:40 AM U-PB CLOSURE TEMPERATURES AND METAMORPHIC COOLING RATES FROM COEXISITING RUTILE AND TITANITE: MILLER, Brent V., Department of Geological Sciences, Univ of North Carolina, Chapel Hill, NC 27599, bvmiller@email.unc.edu.
10:00 AM Break
10:20 AM AGE AND SIGNIFICANCE OF THE FALLS LEUCOGNEISS: CASLIN, Lauren1, STODDARD, Edward F.1, and MILLER, Brent V.2, (1) Marine, Earth and Atmospheric Sciences, North Carolina State Univeristy, Raleigh, NC 27695, lacaslin@unity.ncsu.edu, (2) Geological Sciences, Univ of North Carolina at Chapel Hill, Chapel Hill, NC 27599
10:40 AM A COMPARISON OF ZIRCON AND MONAZITE U-PB AGES FROM THE ROLESVILLE BATHOLITH, NC: LESSONS FROM MISBEHAVING MINERALS: SCHNEIDER, David and SAMSON, Scott, Department of Earth Sciences, Syracuse Univ, Syracuse, NY 13244, daschn01@syr.edu
11:00 AM TIMING OF ALLEGHANIAN MAGMATISM REVISITED: SAMSON, Scott D., Earth Sciences, Syracuse University, Syracuse, NY 13244-1070, sdsamson@syr.edu.
11:20 AM GEOCHRONOLOGY AND "TERRANOLOGY": THE ON-GOING ROLE OF U-PB DATING IN UNRAVELLING TERRANES IN SOUTHERN NEW BRUNSWICK, CANADA: BARR, Sandra M., Department of Geology, Acadia Univ, Wolfville, NS B0P 1X0, Canada, sandra.barr@acadiau.ca, MILLER, Brent V., Geological Sciences, Univ of North Carolina at Chapel Hill, Chapel Hill, NC 27565, and WHITE, Chris E., N.S. Dept. Natural Resources, PO Box 698, Halifax, NS B3J 2T9, Canada
11:40 AM ELECTRON MICROPROBE U-TH-PB GEOCHRONOLOGY OF MONAZITES IN CONTACT METAMORPHOSED ALUMINOUS ROCKS OF THE MARTINSVILLE INTRUSIVE COMPLEX, SMITH RIVER ALLOCHTHON, VIRGINIA: TRACY, Robert J., Geological Sciences, Virginia Tech, Blacksburg, VA 24061-0420, rtracy@vt.edu, BEARD, James S., VMNH, Martinsville, VA 24112, and HENIKA, William S., VA Dept. Mines, Minerals and Energy; and Geol Sciences, Virginia Tech, Blacksburg, VA 24061-0420

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