Geological Society of America

1:30 PM

LATE HOLOCENE EQUATORIAL PALEOCLIMATE RECORD BASED UPON SOILS AND PALEOSOLS SPANNING THE MEDIEVAL WARM PERIOD AND LITTLE ICE AGE, LOBOI PLAIN, KENYA

Steven Driese, Baylor University, Waco, TX and Gail M. Ashley, Rutgers University, Piscataway, NJ and Zheng-Hua Li, Univ of Tennessee, Knoxville, TN and Victoria C. Hover, University of Louisiana-Lafayette, Lafayette, LA and R. Bernhart Owen, Hong Kong Baptist Univ, Hong Kong, N/A

106349 (Technical Sessions)

1:45 PM

A CHANGING LANDSCAPE IN THE SEMI-ARID TROPICS: INSIGHTS FROM PALEOSOLS, EAST AFRICA RIFT, KENYA

Gail M. Ashley, Rutgers University, Piscataway, NJ and Victoria C. Hover, University of Louisiana-Lafayette, Lafayette, LA and Steven Driese, Baylor University, Waco, TX and Cara A. Roure, Univ of Connecticut, Storrs, CT and Sally McBrearty, Univ of Connecticut, Storrs, CT and R. Bernhart Owen, Hong Kong Baptist Univ, Hong Kong, N/A and Robin W. Renaut, Univ of Saskatchewan, Saskatoon, SK

115552 (Technical Sessions)

2:00 PM

ALLUVIAL PALEOSOLS AND THE YOUNGER DRYAS OF THE CENTRAL GREAT PLAINS

William C. Johnson, University of Kansas, Lawrence, KS and David W. May, University of Northern Iowa, Cedar Falls, IA

115349 (Technical Sessions)

2:15 PM

PALEOENVIRONMENTAL INFORMATION FROM HIGH-RESOLUTION U-SERIES AND TRACE ELEMENT MEASUREMENTS OF PEDOGENIC OPAL

Kate Maher, U.S. Geological Survey, Menlo Park, CA and Joanna Redwine, University of Nevada, Reno, Reno, NV and Frank Mazdab, Stanford University, Stanford, CA and D.M. Miller, US Geological Survey, Menlo Park, CA

116458 (Technical Sessions)

2:30 PM

LATE TERTIARY DRY AND HOT PALEOCLIMATE IN CENTRAL CHINA: REVELATION FROM AUTHIGENIC NANO-PHASE MINERALS IN THE RED CLAY LAYERS OF CHINESE LOESS

Tianhu Chen, Hefei Univ of Technology, Hefei, N/A and Huifang Xu, Univ of Wisconsin, Madison, WI and Jun Chen, Nanjing University, Nanjing, N/A and Junfeng Ji, Nanjing University, Nanjing, N/A and Qiaoqin Xie, Hefei Univ of Technology, Hefei, N/A and Huayu Lu, Nanjing University, Nanjing, N/A and Xiaoyong Wang, Chinese Academy of Sciences, Xi’an, N/A

112701 (Technical Sessions)

2:45 PM

EXPERIMENTAL TESTS OF THE EFFECTS OF AL SUBSTITUTION ON THE GOETHITE-WATER D/H FRACTIONATION FACTOR

Weimin Feng, University of Texas at Austin, Austin, TX and Crayton Yapp, Dallas, TX

111309 (Technical Sessions)

3:00 PM

DECIPHERING REGIONAL VERSUS GLOBAL CLIMATIC VARIATIONS USING PALEOSOLS: AN EXAMPLE FROM THE EARLY MIOCENE

Jessica Maite Michelle Hamer, Royal Holloway, University of London, Egham, N/A and Nathan D. Sheldon, Royal Holloway, University of London, Egham, N/A and Gary J. Nichols, Royal Holloway, University of London, Egham, N/A

115127 (Technical Sessions)

3:15 PM

A STABLE CARBON AND OXYGEN ISOTOPE RECORD FROM PEDOGENIC CARBONATE FOR THE LATEST OLIGOCENE (EARLIEST MIOCENE ?) OF NORTHWEST CHINA AND ITS PALEOCLIMATIC AND PALEOECOLOGICAL IMPLICATIONS

Paul David White, Chinese Academy of Sciences, Beijing, N/A

107417 (Technical Sessions)

3:30 PM

COMING TO GRIPS WITH THE EVAPORATION RATES RECORDED IN ANCIENT SOILS: INTERPRETING DIAGENETIC TRENDS FROM VADOSE & PHREATIC COMPONENTS IN CALCIC PALEOSOLS

Greg A. Ludvigson, University of Kansas, Lawrence, KS and David F. Ufnar, Univ. of Southern Mississippi, Hattiesburg, MS and Luis A. Gonzalez, The University of Kansas, Lawrence, KS and Marina B. Suarez, The University of Kansas, Lawrence, KS

115654 (Technical Sessions)

3:45 PM

PALEOENVIRONMENTAL TRANSITION ACROSS THE PERMIAN-TRIASSIC BOUNDARY: INSIGHTS FROM PALEOSOLS OF THE JUNGGAR BASIN, NW CHINA

Stephanie Germaine Thomas, Southern Methodist University, Dallas, TX and Neil Tabor, Dallas, TX and Wan Yang, Wichita State Univ, Wichita, KS

114469 (Technical Sessions)

4:00 PM

USING VARIATIONS IN ICHNOFAUNA AND PEDOGENIC PROPERTIES OF MIDDLE TO LATE PENNSYLVANIAN FLOODPLAIN PALEOSOLS TO DETERMINE THE IMPACT OF CLIMATE CHANGE ON EARLY SOIL ECOSYSTEMS

Daniel I. Hembree, Ohio University, Athens, OH and Gregory C. Nadon, Ohio University, Athens, OH

110361 (Technical Sessions)

4:15 PM

ALUMINUM SUBSTITUTION IN GOETHITE FROM THE LATE ORDOVICIAN NEDA FORMATION: IMPLICATIONS FOR ENVIRONMENT OF FORMATION AND POST-BURIAL WEATHERING

Jason C. Austin, University of Georgia, Hoschton, GA and Paul A. Schroeder, Univ of Georgia, Athens, GA

114898 (Technical Sessions)

4:30 PM

SOIL FORMATION BENEATH THE EARTH'S OLDEST KNOWN (3.46 GA) UNCONFORMITY?

Efem Altinok, The Pennsylvania State University, Univeristy Park, PA and Hiroshi Ohmoto, The Pennsylvania State University, University Park, PA

113082 (Technical Sessions)

4:45 PM

GEODYNAMIC SIGNIFICANCE OF SUPERSOLS IN THE STRATIGRAPHIC RECORD

Peter G. DeCelles, University of Arizona, Tucson, AZ

113099 (Technical Sessions)

T221 Paleosols, Proxies, and Paleoenvironments II

Presentations