Geological Society of America

9:00 AM

FIELD RELATIONSHIPS THROUGHOUT THE SOUTHERN DEATH VALLEY REGION OF CA REQUIRE THE HORSE THIEF SPRING FORMATION TO BE OLDER THAN THE 1.1 GA CRYSTAL SPRING DIABASE

Janet Gordon, Pasadena, CA and James Calzia, U.S. Geological Survey, Menlo Park, CA and Tapani Ramo, University of Helsinki, Helsinki and James Sears, University of Montana, Missoula, MT

332484 (Technical Sessions)

9:00 AM

TUNNEL VISIONS BENEATH BOSTON HARBOR, MASSACHUSETTS: STRUCTURE AND STRATIGRAPHY OF THE EDIACARAN CAMBRIDGE FORMATION

Margaret Thompson, Wellesley College, Wellesley, MA and J.L. Crowley, Boise State University, Boise, ID

332940 (Technical Sessions)

9:00 AM

SR ISOTOPE COMPOSITION OF MARBLES AND DETRITAL ZIRCON U-PB AGES FROM THE GUBONGSAN GROUP IN NORTHEASTERN GYEONGGI MASSIF, SOUTH KOREA: IMPLICATIONS ON NEOPROTEROZOIC CRUSTAL EVOLUTION OF THE SINO-KOREAN CRATON

Youngji Ha, Pukyong National University, Busan and Yong-Sun Song, Pukyong National University, Busan and Kye-Hun Park, Pukyong National University, Busan

335029 (Technical Sessions)

9:00 AM

REVISITING THE WESTERN EXPOSURES OF THE PENOKEAN MARSHFIELD TERRANE: PRELIMINARY ZIRCON LA ICPMS U-PB AND LU-HF DATA REVEAL NEW COMPLEXITY IN AN OLD TERRANE

Shawn Malone, Ball State University, Muncie, IN and Joshuah J. Klier, Ball State University, Muncie, IN

337140 (Technical Sessions)

9:00 AM

GEOCHRONOLOGIC AND MICROSTRUCTURAL CONSTRAINTS ON THE PROTEROZOIC EAU PLEINE SHEAR ZONE IN CENTRAL WISCONSIN

Erica Powers Craddock, Lawrence University, Appleton, WI and Marcia G. Bjornerud, Lawrence University, Appleton, WI and David Malone, Illinois State University, Bloomington, IL

337818 (Technical Sessions)

9:00 AM

REFLECTIVE SPECTROSCOPY INVESTIGATION OF ARCHEAN BASEMENT ROCKS FROM TORREY CANYON, WYOMING: IMPLICATIONS FOR FUTURE HIGH RESOLUTION HYPERSPECTRAL MAPPING

Trevor Lambert, Miami University - Hamilton, Hamilton, OH and J. Caleb Chappell, Miami University, Oxford, OH and Mark Krekeler, Miami University - Hamilton, Hamilton, OH

338394 (Technical Sessions)

9:00 AM

MOLYBDENUM ISOTOPE AND TRACE METAL SIGNALS IN AN IRON-RICH MESOPROTEROZOIC OCEAN: A SNAPSHOT FROM THE VINDHYAN BASIN, INDIA

Geoffrey J. Gilleaudeau, George Mason University, Fairfax, VA and Swapan K. Sahoo, University of Nevada, Las Vegas, Las Vegas, NV and Chadlin Ostrander, Arizona State University, Tempe, AZ and Jeremy D. Owens, Florida State University, Tallahassee, FL and Simon W. Poulton, Univ. of Leeds, Leeds and Timothy Lyons, University of California, Riverside, CA and Ariel Anbar, Arizona State University, Tempe, AZ

339003 (Technical Sessions)

9:00 AM

DECIPHERING PRIMARY AND DIAGENETIC CONTROLS ON MINERALOGY IN THE ~1.9 GA BIWABIK IRON FORMATION, MN USING PAIRED TEXTURAL AND GEOCHEMICAL ANALYSES

Samuel P. Duncanson, University of Minnesota - Duluth, DULUTH, MN and Latisha Brengman, University of Minnesota Duluth, Duluth, MN and John H. Fournelle, University of Wisconsin, Madison, WI and Aurélien Moy, University of Wisconsin Madison, Madison, WI

339482 (Technical Sessions)

9:00 AM

CROSSING THE REDOXCLINE: AN INVESTIGATION INTO GEOCHEMICAL CHANGES THAT DIRECTLY LINK TO TEXTURAL TRANSITIONS IN THE ~1.9 GA BIWABIK IRON FORMATION, MN

Latisha Brengman, University of Minnesota Duluth, Duluth, MN and Samuel P. Duncanson, University of Minnesota, Duluth, Duluth, MN and Stephen Hanson, University of Minnesota, Duluth, Duluth, MN and Anthony Wetzel, University of Minnesota, Duluth, Duluth, MN

339533 (Technical Sessions)

9:00 AM

GAMMA SPECTROMETRY CHARACTERISTICS OF THE ORGANIC-RICH DOUSHANTUO SHALE IN THE MID-YANGTZE AREA

Xiaohuan Bao, Wuhan and Huangyun Xu, Wuhan and Zhonghao Wang, Wuhan

341153 (Technical Sessions)

9:00 AM

GEOLOGY AND GEOCHRONOLOGY OF THE MESOPROTEROZOIC MCDOWELL MOUNTAINS SEQUENCE IN ARIZONA

Steve Skotnicki, Gilbert, AZ and Matthijs C. van Soest, Arizona State University, Tempe, AZ

341369 (Technical Sessions)

41 D26. Recent Advances in Precambrian Geology (Posters)

Presentations