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2002 Denver Annual Meeting (October 27-30, 2002)

Session No. 125
Tuesday, 29 October 2002: 8:00 AM-12:00 PM

P2. Evolution of the Early Atmosphere, Hydrosphere, and Biosphere: Constraints from Ore Deposits

Society of Economic Geologists; Geochemical Society, NASA Astrobiology Division

 

Stephen Kesler and Hiroshi Ohmoto, Conveners
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
ORE DEPOSITS AND THE EVOLUTION OF THE ATMOSPHERE, THE OCEANS, AND THE BIOSPHERE--AN OVERVIEW
HOLLAND, Heinrich D., Earth and Planetary Sciences, Harvard Univ, 20 Oxford Street, Cambridge, MA 02138, holland@eps.harvard.edu, holland@eps.harvard.edu
2
8:35 AM
JACK HILLS METACONGLOMERATE: EVIDENCE OF EARLY AND LATE ARCHEAN HYDROSPHERE
VALLEY, John W.1, CAVOSIE, A.J.1, WILDE, S.A.2, GRANT, M.2 and LIU, Dunyi3, (1)Geology, Univ. of Wisconsin, Madison, WI 53706, (2)Curtin Univ, Bentley, 6102, Australia, (3)Chinese Acad. Geol. Sci, Beijing, China, valley@geology.wisc.edu, valley@geology.wisc.edu
3
9:00 AM
MAGNETITE-SERIES/ILMENITE-SERIES GRANITOIDS IN SOME ARCHEAN TERRAINS IN SOUTH AFRICA
ISHIHARA, Shunso, Geol Survey of Japan, AIST Central 7, Tsukuba, 305-8567, Japan, ROBB, Laurence J., ANHAEUSSER, Carl R. and IMAI, Akira, s-ishihara@aist.go.jp, s-ishihara@aist.go.jp
4
9:25 AM
WITWATERSRAND PALEOPLACER MINERALOGY AS AN INDICATOR OF THE ARCHEAN ATMOSPHERE
MINTER, W.E.L., Geological Sciences, Univ of Cape Town, Pvt. Bag, Rondebosch, Cape Town, 7701, South Africa, welm@geology.uct.ac.za, welm@geology.uct.ac.za
5
9:50 AM
THE WITWATERSRAND LEGACY: WHAT DOES IT MEAN FOR EARLY EVOLUTION OF THE EARTH'S ATMOSPHERE?
LAW, Jonathan, PO Box 147, South Melbourne, Victoria, 3205, Australia and PHILLIPS, G. Neil, Division of Exploration and Mining, CSIRO, c/- PO Box 3, Central Park, Victoria, 3145, Australia, law_jonathan@hotmail.com, law_jonathan@hotmail.com
6
10:15 AM
PISOLITIC IRONSTONE AND FERRICRETE IN THE 2.22 - 2.4 GA TIMEBALL HILL FORMATION, TRANSVAAL SUPERGROUP: IMPLICATIONS FOR THE HISTORY OF ATMOSPHERIC OXYGEN
BEUKES, N.J., DORLAND, H.C. and GUTZMER, J., Geology, Rand Afrikaans Univ, Box 524, Auckland Park, 2006, South Africa, njb@na.rau.ac.za, njb@na.rau.ac.za
7
10:40 AM
VOLCANOGENIC MASSIVE SULFIDES THROUGH TIME
FRANKLIN, James M., Franklin Geosciences Ltd, 24 Commanche Dr, Ottawa, ON K2E 6E9, Canada and HANNINGTON, Mark, Mineral Resources Division, Geol Survey of Canada, 601 Booth St, Ottawa, ON K1A 0E8, Canada, jfranklin4@compuserve.com, jfranklin4@compuserve.com
8
11:05 AM
BIOMEDIATION IN IRONFORMATION GENESIS SINCE THE EARLY ARCHEAN
GROSS, Gordon A., Geol Survey of Canada, 601 Booth Street, Ottawa, ON K1A 0E8, Canada, ggross@nrcan.gc.ca, ggross@nrcan.gc.ca
9
11:30 AM
BANDED IRON FORMATIONS AS GUIDES FOR THE HISTORY OF THE LITHOSPHERE, ATMOSPHERE, AND HYDROSPHERE
OHMOTO, Hiroshi, Astrobiology Research Center & Dept. of Geosciences, The Pennsylvania State Univ, 435 Deike Bldg, University Park, PA 16802, ohmoto@geosc.psu.edu, ohmoto@geosc.psu.edu
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