Session: Precambrian Geology (Posters)

82

Low to Negligible Water Contents in Komatiites: Evidence from Pyroclastic Komatiitic Tuffs in the 3.5-3.2 Ga Barberton Greenstone Belt, South Africa
Melanie Thompson Stiegler, Stanford University; Donald R. Lowe, Stanford University; Gary R. Byerly, Louisiana State University

145-2

83

Depositional Environments and Provenance of Metasedimentary Rocks in the Jack Hills Belt, Western Australia
Kenneth A. Eriksson, Virginia Tech; Simon Wilde, Curtin University of Technology

145-3

84

Discovery of the Oldest (~3.4 Ga) Lateritic Paleosols in the Pilbara Craton, Western Australia
Ian Johnson, Penn State University; Yumiko Watanabe, The Pennsylvania State University; Kosei Yamaguchi, JAMSTEC; Hiroshi Hamasaki, The Pennsylvania State University; Hiroshi Ohmoto, The Pennsylvania State University

145-4

85

Geobiology of the Late Paleoproterozoic Duck Creek Dolomite, Western Australia
Jonathan P. Wilson, Harvard University; David T. Johnston, Harvard University; Andrew H. Knoll, Harvard University; Woodward W. Fischer, California Institute of Technology; John P. Grotzinger, Caltech; Malcolm R. Walter, Australian Centre for Astrobiology, Macquarie Univ; Melvin Simon, California Institute of Technology; John Abelson, California Institute of Technology; The Members of The 2007 Agouron Advanced Geobiology Summer Course, Sky Rashby – Caltech, Maia Schweizer – Caltech, Wes Watters – MIT

145-5

86

Body and Trace Fossils from the Deep Spring Formation (Ediacaran), Western Nevada
Soo-Yeun Ahn, The Ohio State University; Loren E. Babcock, The Ohio State University; Margaret N. Rees, University of Nevada, Las Vegas; J. Stewart Hollingsworth, Institute for Cambrian Studies

145-6

87

A Plausibility Test for Neoproterozoic Correlations Based on Global Climate Episodes: The Case History of the Kingston Peak Accommodation Paradox, Panamint Range, California
Camille Partin, University of California; Peter Sadler, University of California

145-7

88

Lithologic Variation of Proterozoic Rocks in the San Gabriel Mountains, Wrightwood, California
Jessica-Ann M. Dillon, California State University Northridge; Elena A. Miranda, California State University at Northridge

145-8

89

Paleoproterozoic Orthogneisses from the Cerro Prieto Area: A New Addition to the Mexican Yavapai Province in NW Sonora
Aldo Izaguirre, Universidad Nacional Autónoma de México; Alexander Iriondo, Universidad Nacional Autónoma de México; Joseph L. Wooden, U.S.G.S.-Stanford Ion Probe Laboratory; James R. Budahn, U.S. Geological Survey; Peter Schaaf II, Universidad Nacional Autónoma de Mexico

145-9

90

Paleoproterozoic Gneisses of the San Luisito Hills in NW Sonora: Extending the Mexican Yavapai Province of SW Laurentia
Alejandro Gutíerrez-Coronado, Universidad Nacional Autónoma de México; Alexander Iriondo, Universidad Nacional Autónoma de México; José Luis Rodríguez-Castañeda, UNAM; Joseph L. Wooden, U.S.G.S.-Stanford Ion Probe Laboratory; James R. Budahn, U.S. Geological Survey; Rufino Lozano-Santa Cruz, Universidad Nacional Autónoma de México; Teodoro Hernández-Treviño, Universidad Nacional Autónoma de México

145-10

91

Paleoproterozoic (~1.76–1.73 Ga) Banded Gneisses from the Zona Canteras-Puerto Peñasco Area: A New Occurrence of Yavapai-Mazatzal(?)-Type Rocks in NW Sonora, Mexico
Harim E. Arvizu, Universidad Autónoma de Nuevo León; Alexander Iriondo, Universidad Nacional Autónoma de México; Gabriel Chávez-Cabello, Universidad Autónoma de Nuevo León; George D. Kamenov, University of Florida; David A. Foster, University of Florida; Rufino Lozano-Santa Cruz, Universidad Nacional Autónoma de México; Gabriela Solís-Pichardo, Universidad Nacional Autónoma de México

145-11

92

A Laramide Pb-Loss Event Recorded in Zircons from the Murrieta Mesoproterozoic (~1.1 Ga) Granite in Sierrita Blanca, NW Sonora, Mexico
Mónica A. Enríquez-Castillo, Universidad Autónoma de Nuevo León; Alexander Iriondo, Universidad Nacional Autónoma de México; Gabriel Chávez-Cabello, Universidad Autónoma de Nuevo León

145-12

93

The Sierra Los Tanques ~1.1 Ga Granite in NW Sonora: Another Example of Mesoproterozoic Plutonism along the Mexican Yavapai Province
Alexander Iriondo, Universidad Nacional Autónoma de México; George D. Kamenov, University of Florida; David A. Foster, University of Florida

145-13

94

Modeling Fractional Crystallization In the Mesoproterozoic Lone Grove Batholith, Llano Uplift, Central Texas
Walt Gray, Southwest Research Institute; Robert K. Smith, University of Texas at San Antonio; Tyson R. Gibbs, University of Texas at San Antonio

145-14

95

Lithotectonic Stacking Sequence of Mesoproterozoic Domain Rocks, Northeastern Llano Uplift, Central Texas
Volker W. Göbel, Stephen F. Austin State Univ; Jace A. Morris, Comstock Resources Inc

145-15

96

Was the Black Hills Domain (South Dakota) Always Part of the Archean Wyoming Craton?: New Evidence from ~3.4-2.7 Ga Detrital-Zircon Populations Found in Both ~1.9 and ~2.5 Ga Strata
Peter S. Dahl, Kent State Univ; Robert Frei, University of Copenhagen; Martin J. Whitehouse, Swedish Museum of Natural History

145-16

97

U-Pb Geochronologic Study of Magmatic Zircon in Paleoproterozoic Granitic Pegmatite and Associated Metapelites, Black Hills, South Dakota: Implications for Gold Petrogenesis and Sedimentary Provenance
Amiya K. Ghosh, Kent State University; Robert Frei, University of Copenhagen; Martin J. Whitehouse, Swedish Museum of Natural History; Peter S. Dahl, Kent State Univ

145-17

98

New Evidence for 2.01 Ga Rifting of the Easternmost Wyoming Craton (Black Hills, South Dakota): Implications for Break-up of a Supercraton (Superia)
Jessica S. Hark, Kent State University; Robert Frei, University of Copenhagen; Martin J. Whitehouse, Swedish Museum of Natural History; Peter S. Dahl, Kent State Univ

145-18

99

The Source and Emplacement of Leucogranites in the Teton Range Following High-Pressure Archean Metamorphism
Lee Finley-Blasi, University of Wyoming; Carol D. Frost, University of Wyoming; Susan M. Swapp, University of Wyoming; B. Ronald Frost, University of Wyoming; Braden Fitz-Gerald, University of Wyoming

145-19

100

Teton Range, Wyoming: An Uplift Recording Two Distinct Archean Histories
Susan M. Swapp, University of Wyoming; Carol D. Frost, University of Wyoming; B. Ronald Frost, University of Wyoming; Lee Finley-Blasi, University of Wyoming; Braden Fitz-Gerald, University of Wyoming

145-20

101

Proterozoic Paleogeography and Stratigraphy of the Snake Range, Eastern Nevada and Albion-Grouse Creek Ranges, Southern Idaho: Detrital Zircon Constraints and Stratigraphic Surprises
Paul K. Link, Idaho State University; Scott Johnston, University of Arizona

145-21

102

Shifts in Global Metallogeny at 1850 Ma: A Connection to the Giant Sudbury Impact Event?
John F. Slack, US Geol Survey; William F. Cannon, US Geological Survey

145-22

103

SHRIMP U-Pb and Oxygen Data in Zircon from the Mata Grande Pluton; First Record of Paleoproterozoic Juvenile Magmatism in the Borborema Province, NE Brazil
Adejardo da Silva Filho, Universidade Federal de Pernambuco; Ignez Guimaraes, Universidade Federal de Pernambuco; Richard Armstrong, The Australian National University

145-23

104

Age and Stratigraphic Affinity of Neoproterozoic Conglomerate at Neponset River Gorge, Milton, MA: Constraints from U-Pb Geochronology
Mei Ai Khoo, Wellesley College; Jahandar Ramezani, Massachusetts Institute of Technology; Margaret D. Thompson, Wellesley College

145-24

105

Deformation and Migmatization in the Stensjostrands Naturreservat, Halland Province SW Sweden
Sarah Dean, Hope College; Aranzazu Pinan-Llamas, Hope College; Leif Johansson, Lund University; Jesse Reimink, Hope College; Edward Hansen, Hope College

145-25

106

Regional Geochemistry of the Dokhan Volcanics, Eastern Desert, Egypt
Leon E. Long, University of Texas; Adel M. Hassan, Tanta University

145-26

107

A Neoproterozoic Dextral Shear Zone, Central Madagascar
Tsilavo Raharimahefa, St. Louis University; Timothy M. Kusky, Saint Louis Univ

145 Precambrian Geology (Posters)