Session: Precambrian Geology (Posters) (2002 Denver Annual Meeting (October 27-30, 2002))

Paper #

Booth #

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65

GEOCHEMISTRY OF A 2.3 GA SUB-JATURIAN PALEOLATERITE IN THE HALLAVAARA AREA, EASTERN FINLAND

WATANABE, Naoki¹, MARMO, Jukka S.², WATANABE, Yumiko³ and OHMOTO, Hiroshi³, (1)Rsrch. Inst. for Hazards in Snowy Areas, Niigata Univ, Ikarashi 2-8050, Niigata, 950-2181, Japan, (2)Geol Survey of Finland, Espo, SF-02150, Finland, (3)Astrobiology Research Center & Dept. of Geosciences, The Pennsylvania State Univ, 435 Deike Bldg, University Park, PA 16802, jibanken@cc.niigata-u.ac.jp, jibanken@cc.niigata-u.ac.jp

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66

DISTINGUISHING KEROGENS FROM ABIOTICALLY PRODUCED CARBONACEOUS MATERIAL: LIMITATIONS OF RAMAN SPECTROSCOPY

PASTERIS, Jill D. and WOPENKA, Brigitte, Department of Earth and Planetary Sciences, Washington Univ, Campus Box 1169, St. Louis, MO 63130-4899, PASTERIS@LEVEE.WUSTL.EDU, PASTERIS@LEVEE.WUSTL.EDU

3

67

BIOGENIC AND ORTHOCHEMICAL MICROFACIES AND SEDIMENTARY ENVIRONMENTS OF THE EARLY ARCHEAN BUCK REEF CHERT, BARBERTON GREENSTONE BELT, SOUTH AFRICA

TICE, Michael M., Department of Geological and Environmental Sciences, Stanford Univ, Building 320, Stanford University, Stanford, CA 94305-2115 and LOWE, Donald R., Department of Geological and Environmental Sciences, Stanford Univ, Building 320, Room 118, Stanford University, Stanford, CA 94305-2115, mtice@pangea.stanford.edu, mtice@pangea.stanford.edu

4

68

A NEW LOOK AT STROMATOLITE FORM DIVERSITY

OLCOTT, Alison, Department of Earth Sciences, Univ of Southern California, Los Angeles, CA 90089, CORSETTI, Frank A., Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089 and AWRAMIK, Stanley M., Department of Geological Sciences, Univ of California, Santa Barbara, CA 93106, olcott@earth.usc.edu, olcott@earth.usc.edu

5

69

CONSTRAINTS ON ARCHEAN (2.7 GA) SEAWATER SALINITY FROM FLUID INCLUSION DATA, BEN NEVIS AREA, ABITIBI GREENSTONE BELT, ONTARIO, CANADA

WEIERSHÄUSER, Lars and SPOONER, Ed, Department of Geology, Univ of Toronto, 22 Russell Street, Toronto, ON M5S 3B1, Canada, lars@geology.utoronto.ca, lars@geology.utoronto.ca

6

70

SHRIMP II GEOCHRONOLOGY OF THE ADIRONDACK AMCG SUITE, II: GRANITOIDS, GABBROS, AND CROSSCUTTING DIKES

MCLELLAND, James M.¹, HAMILTON, Michael A.², BICKFORD, Marion E.³, CLECHENKO, Cory C.⁴ and VALLEY, John W.⁴, (1)Dept. Geology, Skidmore College, Saratoga Springs, NY 12866, (2)J.C. Roddick Ion Microprobe (SHRIMP II) Lab, Geological Survey of Canada, 601 Booth St, Ottawa, ON K1A 0E8, Canada, (3)Dept. Earth Sciences, Syracuse Univ, Syracuse, NY 13244, (4)Dept. of Geology and Geophysics, Univ. of Wisconsin, Madison, WI 53706, jmclelland@citlink.net, jmclelland@citlink.net

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71

SHRIMPII GEOCHRONOLOGY OF THE ADIRONDACK AMCG SUITE, III: INTERPRETATION OF METAMORPHIC EFFECTS ON ZIRCON AGES

BICKFORD, M.E.¹, MCLELLAND, James M.², HAMILTON, Michael A.³, CLECHENKO, Cory C.⁴ and VALLEY, John W.⁴, (1)Department of Earth Sciences, Syracuse Univ, Syracuse, NY 13244, (2)Dept. of Geology, Colgate Univ, Hamilton, NY 13346-1398, (3)J.C. Roddick Ion Microprobe (SHRIMP II) Lab, Geological Survey of Canada, 601 Booth St, Ottawa, ON K1A 0E8, Canada, (4)Dept. of Geology and Geophysics, Univ of Wisconsin, Madison, WI 53706, mebickfo@syr.edu, mebickfo@syr.edu

8

72

THE SUNSAS OROGEN IN WESTERN AMAZON CRATON, SOUTH AMERICA AND CORRELATION WITH THE GRENVILLE OROGEN OF LAURENTIA, BASED ON U-PB ISOTOPIC STUDY OF DETRITAL AND IGNEOUS ZIRCONS

SANTOS, João Orestes, Geology, Geol Survey of Brazil, Av. Borges Medeiros 3200 - 1905, Praia de Belas, Porto Alegre, 90110-150, Brazil, EASTON, Robert M., Ontario Geol Survey, 933 Ramsey Lake Rd Rm B7064, Sudbury, ON P3E 6B5, Canada, POTTER, Paul E., Univ of Cincinnati, Department of Geology, Cincinnati, OH 45221-0013, RIZZOTTO, Gilmar Antônio, Geol Survey of Brazil, Av. Lauro Sodré 1400, Porto Velho, 78904-300, Brazil, HARTMANN, Léo Afraneo, Univ of Rio Grande do Sul, Av Bento Gonçalves 9500, Agronomia, Porto Alegre, 91540-000, Brazil and MCNAUGHTON, Neal J., Geology and Geophysics, Univ of Western Australia, Nedlands, Perth, 6907, Australia, Pepotter@if.ufrgs.br, Pepotter@if.ufrgs.br

9

73

PETROGENETIC IMPLICATION OF THREE CONTRASTING TERRANES IN NORTHERN MADAGASCAR

BUCHWALDT, Robert, TUCKER, Robert D. and DYMEK, Robert F., Department of Earth and Planetary Sciences, Washington Univ, St. Louis, Campus Box 1169, One Brookings Drive, St. Louis, MO 63130, buchwaldt@levee.wustl.edu, buchwaldt@levee.wustl.edu

10

74

THE MOZAMBIQUE BELT, EASTERN AFRICA – TECTONIC EVOLUTION OF THE MOZAMBIQUE OCEAN AND GONDWANA AMALGAMATION

CUTTEN, Huntly N.C., Tectonics Special Research Centre, Dept. of Geology and Geophysics, Univ of Western Australia, 35 Stirling Highway, Crawley, Perth, 6907, Australia, hcutten@tsrc.uwa.edu.au, hcutten@tsrc.uwa.edu.au

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75

EDIACARAN CYCLOMEDUSIDS FROM AN ACCRETED TERRANE IN THE EASTERN KLAMATH MOUNTAINS, CA

LINDSLEY-GRIFFIN, Nancy, Geosciences Dept, Univ Nebraska, 214 Bessey Hall, Lincoln, NE 68588-0340, FARMER, Jack D., Dept. Geological Sciences, Arizona State Univ, Tempe, AZ 85287-1404 and GRIFFIN, John R., Geosciences Dept, Univ. Nebraska, 214 Bessey Hall, Lincoln, NE 68588-0340, nlg@unl.edu, nlg@unl.edu

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76

CHARACTERIZATION OF THE RED PINE SHALE, UINTA MOUNTAIN GROUP: MID-NEOPROTEROZOIC PALEOGEOGRAPHY OF NE UTAH

DEHLER, Carol M.¹, CROSSEY, Laura J.², ATUDOREI, Viorel³, BLOCH, John D.² and KARLSTROM, Karl E.², (1)Department of Geology, Utah State Univ, 4505 Old Main Hill, Logan, UT 84322-4505, (2)Dept. of Earth & Planetary Sciences, Univ. of New Mexico, Northrop Hall, Albuquerque, NM 87131, (3)Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, chuaria@cc.usu.edu, chuaria@cc.usu.edu

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77

AGE AND CHARACTER OF PRECAMBRIAN BASEMENT IN THE LITTLE BELT MOUNTAINS, MONTANA: IMPLICATIONS FOR THE ROLE OF THE GREAT FALLS TECTONIC ZONE IN THE PALEOPROTEROZOIC ASSEMBLY OF NORTH AMERICA

VOGL, James J.¹, FOSTER, David A.¹, MUELLER, Paul A.¹, MOGK, David W.² and WOODEN, Joseph L.³, (1)Geological Sciences, Univ of Florida, Gainesville, FL 32611, (2)Department of Earth Sciences, Montana State Univ, Bozeman, MT 59717, (3)U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, jvogl@geology.ufl.edu, jvogl@geology.ufl.edu

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78

CHEMOSTRATIGRAPHY OF THE AVZYAN FORMATION (SOUTHERN URALS, RUSSIA) AND ITS RELATIONSHIP TO THE MID-MESOPROTEROZOIC CARBON ISOTOPIC SHIFT

STAGNER, Alice F.¹, BARTLEY, Julie K.¹, KAH, Linda C.² and MCWILLIAMS, Julie L.¹, (1)Geosciences, State Univ of West Georgia, Carrollton, GA 30118, (2)Department of Geological Sciences, Univ of Tennessee, Knoxville, TN 37996, afstagner01@msn.com, afstagner01@msn.com

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79

THE COOL EARLY EARTH MODEL AND THE LUNAR CAPTURE MODEL: ARE THEY COMPATIBLE?

MALCUIT, Robert J., Denison Univ, Dept Geology & Geography, Granville, OH 43023-1372 and WINTERS, Ronald R., Phys-Astron. Dept, Denison Univ, Granville, OH 43023, malcuit@denison.edu, malcuit@denison.edu