GSA Annual Meeting, November 5-8, 2001

Session No. 96
Tuesday, 6 November 2001: 1:30 PM-5:30 PM

T70. Ophiolites as Problem and Solution in the Evolution of Geological Thinking II

GSA History and Philosophy of Geology Division; GSA Structural Geology and Tectonics Division; International Geology Division, the History of Earth Sciences Society

 

Yildirim Dilek and Sarah E. Newcomb, Advocates
Paper #
Start Time
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1:30 PM
OPHIOLITE STUDIES AND GLOBAL GEOCHEMICAL CYCLES
GREGORY, R. T., Department of Geological Sciences, Southern Methodist Univ, Stable Isotope Laboratory, PO Box 750395, Dallas, TX 75275, bgregory@mail.smu.edu, bgregory@mail.smu.edu
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1:45 PM
OPHIOLITES AS FAITHFUL RECORDS OF THE OXYGEN ISOTOPE RATIO OF ANCIENT SEAWATER
MUEHLENBACHS, Karlis, Earth and Atmospheric Sciences, Univ of Alberta, Edmonton, AB T6G 2E3, Canada, kmuehlen@gpu.srv.ualberta.ca, kmuehlen@gpu.srv.ualberta.ca
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2:00 PM
THE ROLE OF OPHIOLITE STUDIES IN CONSTRAINING SEAWATER CIRCULATION AND ALTERATION OF MODERN OCEANIC CRUST
STAKES, Debra S., Monterey Bay Aquarium Rsch Institute, 7700 Sandholt Road, Moss Landing, CA 95039 and TAYLOR Jr, Hugh P., Division of Geological and Planetary Sciences, California Institute of Technology, MS100-23, Pasadena, CA 91125, debra@mbari.org, debra@mbari.org
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2:15 PM
THE EFFECT OF INCREASED SLOW SPREADING EXTENSION ON THE OCEAN CRUST DIKE/BASALT HYDROTHERMAL SULFUR ANOMALY (MACQUARIE ISLAND, SOUTHERN OCEAN)
DAVIDSON, Garry J., Centre for ore Deposit Research, Univ of Tasmania, GPO Box 252-79, Hobart, 7001, Australia, ALT, Jeffrey C., Department of Geological Sciences, The Univ of Michigan, 2534 C.C. Little Building, Ann Arbor, MI MI48109-1063, RICK, Varne, School of Earth Sciences, Univ of Tasmania, GPO Box 252-79, Hobart, 7001, Australia and BROWN, Anthony V., Mineral Resources Tasmania, PO Box 56, Rosny Park, 7018, Australia, Garry.Davidson@utas.edu.au, Garry.Davidson@utas.edu.au
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2:30 PM
BIO-INTERACTION WITH BASALTIC GLASS AND ITS IMPORTANCE IN MAPPING THE DEPTH OF OCEANIC BIOSPHERE
FURNES, Harald1, THORSETH, Inngun2, MUEHLENBACHS, Karlis3, TORSVIK, Terje4, STAUDIGEL, Hubert5 and TUMYR, Ole1, (1)Geological Institute, Univ of Bergen, Allegt. 41, 5007 Bergen, Norway, (2)Geological Institute, University of Bergen, Allegt. 41, 5007 Bergen, Norway, (3)Earth and Atmospheric Sciences, Univ of Alberta, Edmonton, AB T6G 2E3, Canada, (4)Microbiology, Univ of Bergen, Jahnebakken 5, Bergen, 5020, Norway, (5)Scripps Institute Oceanography, 9500 Gilman Dr Dept 208, La Jolla, CA 92093-0208, harald.furnes@geol.uib.no, harald.furnes@geol.uib.no
 
2:45 PM
OPEN DISCUSSION
 
3:00 PM
BREAK
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3:15 PM
RECENT DEVELOPMENTS IN UNDERSTANDING THE EVOLUTION OF OPHIOLITES : AN OVERVIEW OF NEW GEOCHEMICAL AND PETROGENETIC MODELS FOR OPHIOLITES OF THE SW PACIFIC FROM THE POYA TERRANE, NEW CALEDONIA AND THE TANGIHUA COMPLEX, NEW ZEALAND
NICHOLSON, Kirsten Ngaire, Geology, Ball State Univ, Muncie, IN 47306 and BLACK, Philippa M., Geology, Univ of Auckland, Private bag 92019, Auckland, New Zealand, k.nicholson@auckland.ac.nz, k.nicholson@auckland.ac.nz
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3:30 PM
THE COAST RANGE OPHIOLITE, CALIFORNIA: MULTISTAGE ORIGIN OF A SUPRA-SUBDUCTION ZONE OPHIOLITE
SHERVAIS, John W., Dept Geology, Utah State Univ, 4505 Old Main Hill, Logan, UT 84322-4505, shervais@cc.usu.edu, shervais@cc.usu.edu
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3:45 PM
WHAT CONSTITUTES "EMPLACEMENT" OF AN OPHIOLITE?
WAKABAYASHI, John, 1329 Sheridan Lane, Hayward, CA 94544 and DILEK, Yildirim, Geology, Miami Univ, Oxford, OH 45056, wako@tdl.com, wako@tdl.com
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4:00 PM
A COMPARATIVE STUDY OF TWO OPHIOLITIC MÉLANGES IN THE CALIFORNIA COAST RANGES AND TIBET, WITH IMPLICATIONS ON DISMEMBERMENT PROCESSES OF OCEANIC CRUST
HUOT, François, UMR 6538 "Domaines Océaniques", UBO-IUEM, Place Nicolas Copernic, Plouzané, 29280, France, MAURY, René C., UMR 6538 "Domaines océaniques", UBO-IUEM, Place Nicolas Copernic, Plouzané, 29280, France and HÉBERT, Réjean, Département de géologie et de génie géologique, Université Laval, 1065 ave de la Médecine, Québec, QC G1K 7P4, Canada, franhuot@sdt.univ-brest.fr, franhuot@sdt.univ-brest.fr
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4:15 PM
THE DISCOVERY OF THE ANKARA MELANGE AND ITS UNSUNG HERO OGUZ EROL
SENGOR, A.M.C., ITU Maden Fakultesi, Jeoloji Bolumu, Ayazaga, Istanbul, 80626, Turkey, sengor@itu.edu.tr, sengor@itu.edu.tr
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4:30 PM
OPHIOLITE OBDUCTION AND PLATE MARGIN EVOLUTION: EVIDENCE FROM THE OMAN MOUNTAINS
GRAY, D. R., Earth Sciences, Monash Univ, Clayton, 3168, Australia and GREGORY, R. T., Department of Geological Sciences, Southern Methodist Univ, Stable Isotope Laboratory, PO Box 750395, Dallas, TX 75275, dgray@mail.earth.monash.edu.au, dgray@mail.earth.monash.edu.au
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4:45 PM
SPINEL COMPOSITIONS AS CLUES TO THE ORIGIN AND TECTONIC SIGNIFICANCE OF METADUNITE BODIES IN THE BLUE RIDGE BELT OF THE SOUTHERN APPALACHIAN OROGEN
RAYMOND, Loren A. and ALLAN, James F., Department of Geology, Appalachian State Univ, Boone, NC 28608, raymondla@appstate.edu, raymondla@appstate.edu
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5:00 PM
THE CHOATE MINE: A REPRESENTATIVE HISTORY OF CHROMITE MINING FROM AN OPHIOLITE IN MARYLAND
JOHNSSON III, Harald B., 2622 Deer Park Road, Finksburg, MD 21048, JohnnyJ@ArundelCorp.com, JohnnyJ@ArundelCorp.com
 
5:15 PM
DISCUSSION & CONCLUDING REMARKS
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