Session No. G3 Monday, June 25, 2001

4:30 PM-6:00 PM, Edinburgh International Conference Centre: Poster area
G3. Geological Evolution of the Earth System: Precambrian to Early Paleozoic (Posters)
Martin Brasier, Presiding
Booth #
A HIGH RESOLUTION C-ISOTOPE RECORD FROM THE MID-NEOPROTEROZOIC (~800 MA-742 MA) CHUAR GROUP, GRAND CANYON, ARIZONA: DEHLER, Carol M.1, ELRICK, Maya2, DESMARAIS, David J.3, KARLSTROM, Karl E.2, CROSSEY, Laura J.2, and SHARP, Zachary2, (1) Department of Geology, Utah State Univ, 4505 Old Main Hill, Logan, UT 84322-4505, chuaria@cc.usu.edu, (2) Earth & Planetary Sciences, Univ of New Mexico, Northrop Hall, Albuquerque, NM 87131, (3) Ames Rsch Ctr, Mail Stop 239-4, Moffett Field, CA 94035-1000
AGES AND GEOCHEMICAL SIGNATURES OF SERPENTINITES FROM THE QILIAN FOLD BELT OF NORTHWEST CHINA: SMITH, Alan, Department of Earth Sciences, National Cheng Kung Univ, Tainan Taiwan, muic@ms42.hinet.net.
CONSTRAINTS FROM METASEDIMENTS AND GNEISSES IN THE THE QILIAN FOLD BELT FOR THE POSITION OF THE NORTH CHINA BLOCK IN THE LATE PROTEROZOIC AND EARLY PALEOZOIC: SMITH, Alan, Department of Earth Sciences, National Cheng Kung Univ, Tainan Taiwan, muic@ms42.hinet.net.
LIQUID IMMISCIBILITY IS A POSSIBLE REASON FOR THE ORIGIN OF THE ANCIENT CONTINENTAL CRUST: KALUGIN, Valery M., Institute of Geology, Koptyuga pr., 3, Novosibirsk 630090 Russia, kalugin@uiggm.nsc.ru.
MICROBIAL CONTRIBUTIONS TO PHANEROZOIC REEF DEVELOPMENT: SOJA, C. M., Dept. Geol, Colgate Univ, Hamilton, NY 13346, csoja@mail.colgate.edu, WHITE, B., Dept. Geol, Smith College, Northampton, MA 01063, and ANTOSHKINA, A. I., Geol. Inst, Komi Sci. Ctr, 54, Pervomayskaya St, Syktyvkar, 167610, Russia,
MISSISSIPPI VALLEY-TYPE LEAD-ZINC DEPOSITS THROUGH EARTH HISTORY: BRADLEY, Dwight C., USGS, 4200 University Dr, Anchorage, AK 99508-4626, dbradly@tundra.wr.usgs.gov and LEACH, David, USGS, MS 973, Federal Center, Denver, CO 80225,
SIDERITE-IRON-SILICATE EQUILIBRIA IN PALEOSOLS AS AN ATMOSPHERIC CO2 PALEOBAROMETER OR PALEOPRODUCTIVITY INDEX?: SHELDON, Nathan D.1, RETALLACK, Gregory J.2, and REED, Mark H.2, (1) Geological Sciences, Univ of Oregon, 1272 University of Oregon, Eugene, OR 97403-1272, nsheldon@darkwing.uoregon.edu, (2) Geological Sciences, University of Oregon, 1272 University of Oregon, Eugene, OR 97403-1272
SILURIAN-DEVONIAN INITIATION OF SUBDUCTION ALONG THE PROTO-CORDILLERAN MARGIN OF LAURENTIA: RESPONSE TO CLOSURE OF THE EARLY PALEOZOIC IAPETUS OCEAN?: METCALF, Rodney V., Department of Geoscience, University of Nevada Las Vegas, Las Vegas, NV 89154-4010, metcalfr@nevada.edu.
TECTONO-METAMORPHIC EVOLUTION OF PRECAMBRIAN AL-RICH METAPELITES DURING THRUST LOADING (TRANSANGARIAN REGION OF THE YENISEY RIDGE, EASTERN SIBERIA, RUSSIA): LIKHANOV, Igor Ivanovich1, POLYANSKY, Oleg Petrovich1, and REVERDATTO, Vladimir Victorovich, (1) Institute of Mineralogy and Petrography, Prospect Academician Koptyug, 3, Novosibirsk, 630090, Russia, likh@uiggm.nsc.ru
THE DEGASIFICATION MODEL OF PLANETARY EVOLUTION AND THE SCHEME OF PLANETARY EVOLUTION FOR EARTH: MALYSHEV, Alexander I., Institute of Geology & Geochemistry, Urals Branch of Russian Academy of Sciences, Pochtovy 7, Ekaterinburg, 620151, Russia, Malyshev@igg.uran.ru and MALYSHEVA, Lidiya K., Astronomical Observatory, Urals State Univ, Lenina 51, Ekaterinburg, 620083, Russia,
THE DEPTH OF THE OCEAN IN THE ARCHEAN: HARRISON, Christopher G.A., Marine Geology and Geophysics, Univ of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, charrison@rsmas.miami.edu.

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