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| 239-1 | 1:30 PM | U-PB APATITE AND SPHENE THERMOCHRONOLOGY DOCUMENTING MID-CRUSTAL TEMPERATURE GRADIENTS DURING ARCHEAN LITHOSPHERIC STABILIZATION, KAAPVAAL CRATON, SOUTHERN AFRICA: SCHOENE, Blair, Massachusetts Institute of Technology, 77 Massachusetts Ave, rm 54-1114, Cambridge, MA 02139-4301, schoene@mit.edu and BOWRING, Samuel A., Massachusetts Institute Technology, 77 Massachusetts Ave Rm 54-816, Cambridge, MA 02139-4301 |
| 239-2 | 1:45 PM | FATE OF PB IN AN ARCHEAN ZIRCON: UTSUNOMIYA, Satoshi1, PALENIK, Christopher S.2, EWING, Rodney C.2, VALLEY, John W.3, CAVOSIE, Aaron J.3, and WILDE, Simon A.4, (1) Nuclear Engineering and Radiological Sciences, Univ of Michigan, 2958 Cooley Bld, 2355 Bonisteel Blvd, Ann Arbor, MI 48109-2104, utu@umich.edu, (2) Department of Geological Sciences, Univ of Michigan, 425 E. University Ave, Ann Arbor, MI 48109-1063, (3) Department of Geology and Geophysics, Univ of Wisconsin, Madison, WI 53706, (4) Curtin Univ, Bentley, 6102, Australia |
| 239-3 | 2:00 PM | Paper Withdrawn |
| 239-4 | 2:15 PM | ARCHEAN (2.7 GA) SEAWATER SALINITY – CONSTRAINTS FROM FLUID INCLUSION MICROTHERMOMETRY, BEN NEVIS AREA, ABITIBI GREENSTONE BELT, ONTARIO, CANADA: WEIERSHÄUSER, Lars and SPOONER, Ed T.C., Department of Geology, Univ of Toronto, 22 Russell Street, Toronto, ON M5S 3B1, Canada, lars@geology.utoronto.ca |
| 239-5 | 2:30 PM | DATING SEDIMENTARY SEQUENCES: IN SITU U/TH-PB MICROPROBE DATING OF EARLY DIAGENETIC MONAZITE AND AR-AR DATING OF MARCASITE NODULES: CASE STUDY FROM NEOPROTEROZOIC BLACK SHALES IN THE SOUTHWESTERN U.S: WILLIAMS, Michael L.1, CROSSEY, Laura J.2, JERCINOVIC, Michael J.3, BLOCH, John D.2, KARLSTROM, Karl E.4, DEHLER, Carol M.5, HEIZLER, Matthew T.6, BOWRING, Samuel A.7, and GONCALVES, Philippe8, (1) Department of Geosciences, Univ of Massachusetts, 611 North Pleasant Street, Amherst, MA 01003-5820, mlw@geo.umass.edu, (2) Dept. of Earth & Planetary Sciences, Univ. of New Mexico, Northrop Hall, Albuquerque, NM 87131, (3) Dept. of Geosciences, Univ of Massachusetts, Amherst, MA 01003, (4) Dept. of Earth & Planetary Sciences, Univ of New Mexico, Northrop Hall, Albuquerque, NM 87131, (5) Department of Geology, Utah State Univ, 4505 Old Main Hill, Logan, UT 84322-4505, (6) New Mexico Bureau of Mines and Mineral Resources, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, (7) Massachusetts Institute Technology, 77 Massachusetts Ave Rm 54-816, Cambridge, MA 02139-4301, (8) Department of Geosciences, UMASS, 611, North Pleasant street, Amherst, MA 01003 |
| 239-6 | 2:45 PM | NEOPROTEROZOIC GLACIATIONS: NEW DATA FROM QURUQTAGH, EASTERN CHINESE TIANSHAN: XIAO, Shuhai1, BAO, Huiming2, KAUFMAN, Alan J.3, ZHOU, Chuanming4, and YUAN, Xunlai4, (1) Department of Geoological Sciences, Virginia Poltechnic Institute and State Univ, Blacksburg, VA 24061, xiao@vt.edu, (2) Department of Geology and Geophysics, Louisiana State Univ, Baton Rouge, LA 70803, (3) Geology Department, Univ of Maryland, College Park, MD 20742-4211, (4) Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing, 210008, China |
| 239-7 | 3:00 PM | CHEMOSTRATIGRAPHY OF NEOPROTEROZOIC 'CAP' CARBONATES FROM THE VOLTA BASIN, WEST AFRICA: PORTER, Susannah M., Geological Sciences, UC Santa Barbara, Santa Barbara, CA 93106, porter@geol.ucsb.edu, KNOLL, Andrew H., Botanical Museum, Harvard Univ, 26 Oxford Street, Cambridge, MA 02138, and AFFATON, Pascal, Europole de l'Arbois, CEREGE, B. P. 80, F-13545, Aix-en-Provence, Cedex 04, France |
| 239-8 | 3:15 PM | MICROBIAL CRUSTS AS THE EARLIEST LIFE ON LAND: DOTT, Robert H. Jr and MEDARIS, L. Gordon Jr, Geology and Geophysics, Univ of Wisconsin, Madison, WI 53706, rdott@geology.wisc.edu |
| 239-9 | 3:30 PM | STRUCTURAL AND GEOCHRONOLOGIC EVIDENCE FOR MESOPROTEROZOIC (CA. 1570 MA) REACTIVATION OF THE CHEYENNE BELT SUTURE ZONE, SOUTHEASTERN WYOMING: STRICKLAND, Diana, Geology and Geophysics, Univ of Wyoming, PO box 3006, Laramie, WY 82071-3006, stricklanddiana@msn.com, DUEBENDORFER, Ernest, Department of Geology, Northern Arizona Univ, Flagstaff, AZ 86011, CHAMBERLAIN, Kevin, Geology & Geophysics Department, Univ of Wyoming, Laramie, WY 82071-3006, and HEIZLER, Matthew, New Mexico Bureau of Mines and Mineral Rscs, Socorro, NM 87801 |
| 239-10 | 3:45 PM | PALEOPROTEROZOIC HISTORY OF THE GREAT FALLS TECTONIC ZONE: RESULTS FROM AN INTEGRATED STUDY OF BASEMENT EXPOSURES IN THE LITTLE BELT MOUNTAINS, MONTANA: VOGL, James J.1, MUELLER, Paul A.1, FOSTER, David A.2, and WOODEN, J.L.3, (1) Geological Sciences, Univ of Florida, Gainesville, FL 32611, jvogl@geology.ufl.edu, (2) Dept. of Geology, Univ of Florida, PO Box 112120, Gainesville, FL 32611-2120, (3) U. S. Geol Survey, Menlo Park, CA 94025 |
| 239-11 | 4:00 PM | PROTEROZOIC METAMORPHISM IN THE TOBACCO ROOT MOUNTAINS, MONTANA: PTT PATH AND 207PB/206PB ION MICROPROBE AGES OF MONAZITE: CHENEY, John T., Depatment of Geology, Amherst College, Amherst, MA 01002, jtcheney@amherst.edu, BRADY, John B., Deptartment of Geology, Smith College, Northampton, MA 01063, HARMS, Tekla A., Department of Geology, Amherst, Amherst, MA 01002, and BURGER, H. Robert, Department of Geology, Smith College, Northampton, MA 01063 |
| 239-12 | 4:15 PM | PROTOLITH AND TECTONIC SETTING FOR PRECAMBRIAN METAMORPHIC ROCKS, TOBACCO ROOT MOUNTAINS, MONTANA: AN INTEGRATED VIEW: BRADY, John B.1, BURGER, H. Robert1, CHENEY, John T.2, HARMS, Tekla A.2, MOGK, David W.3, and PECK, William H.4, (1) Department of Geology, Smith College, Northampton, MA 01063, jbrady@science.smith.edu, (2) Department of Geology, Amherst College, Amherst, MA 01002, (3) Department of Earth Sciences, Montana State Univ, Bozeman, MT 59717, (4) Department of Geology, Colgate Univ, 13 Oak Drive, Hamilton, NY 13346 |
| 239-13 | 4:30 PM | CHARACTER AND EVOLUTION OF THE 1.78-1.72 GA BIG SKY OROGENY IN THE TOBACCO ROOT MOUNTAINS, MONTANA: BURGER, H. Robert1, HARMS, Tekla A.2, CHENEY, John T.2, and BRADY, John B.1, (1) Department of Geology, Smith College, Northampton, MA 01063, rburger@email.smith.edu, (2) Department of Geology, Amherst College, Amherst, MA 01002 |
| 239-14 | 4:45 PM | THE PALEOPROTEROZOIC GEOLOGY OF THE NORTHERN HUALAPAI MOUNTAINS, ARIZONA, AND ITS IMPLICATIONS FOR THE MOJAVE PROVINCE/TRANSITION ZONE BOUNDARY IN NORTHWESTERN ARIZONA: SIWIEC, Benjamin R., Department of Geology, Northern Arizona Univ, Box 4099, Flagstaff, AZ 86011, brs8@dana.ucc.nau.edu and DUEBENDORFER, Ernest M., Dept. of Geology, Northern Arizona Univ, Box 4099, Flagstaff, AZ 86011 |
| 239-15 | 5:00 PM | ADDITIONAL EVIDENCE FOR A MAJOR ARCHEAN TERRANE BOUNDARY NEAR THE GRENVILLE FRONT IN ONTARIO: EASTON, Robert Michael, Ontario Geol Survey, 933 Ramsey Lake Rd Rm B7064, Sudbury, ON P3E 6B5, eastonrm@vianet.on.ca and KAMO, S.L., J. Satterly Geochronology Laboratory, Royal Ontario Museum, 100 Queens Park, Toronto, ON M5S 2C6 |
| 239-16 | 5:15 PM | MULTIPLE PROTEROZOIC METAMORPHIC EVENTS IN THE GRENVILLE PROVINCE, NORTHWESTERN NEW YORK STATE: EVIDENCE FROM ION MICROPROBE (SHRIMP) ANALYSIS: STREEPEY, M.M., Department of Geological Sciences, Florida State Univ, 108 Carraway Building, Tallahassee, FL 32306, streepey@quartz.gly.fsu.edu, DAHL, P.S., Department of Geology, Kent Univ, Kent, OH 44242, and WOODEN, J.L., USGS-SUMAC, Stanford Univ, Ion Probe Lab, 367 Panama Mall, Stanford, CA 94305 |
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