Monday, 6 October 2008: 8:00 AM

George R. Brown Convention Center, General Assembly Theater Hall B

Presiding:

Marjorie S. Schulz , David Stonestrom and Daniel D. Richter Jr

8:00 AM

56-1

Rock to Regolith Conversion: Producing "User-Friendly" Material for Terrestrial Ecosystems

Robert C. Graham

8:15 AM

56-2

Distinguishing Between Biogenic and Lithogenic Processes Controlling Mineral Nutrients In Soils

Art White, U. S. Geological Survey; Marjorie Schulz, US Geological Survey; Davison Vivit, U.S. Geological Survey

8:30 AM

56-3

The Importance of Chemical Equilibrium in Controlling Chemical Weathering Rates: Insights from Reactive Transport Modeling of Soil Chronosequences

Kate Maher, Stanford University; Carl Steefel, Lawrence Berkeley National Laboratory; Art White, U. S. Geological Survey; David Stonestrom, US Geological Survey

8:45 AM

56-4

Response of Root Depth to Climate - a Hydrologist's View of the Critical Zone

Andrew J. Guswa, Smith College

9:00 AM

56-5

Rhizogenic Fe Redox Cycling: A Biogeochemical Process Linking Uplands and Wetlands

Ryan L. Fimmen, Battelle - Environmental Restoration; Daniel deB. Richter, Duke University

9:15 AM

56-6

Iron Mass Balance in a Chronosequence of Upland Soils: Surficial Accumulation Due to Biological Lifting of Mineral Iron

Marjorie S. Schulz, US Geological Survey; Art F. White, US Geological Survey; John Fitzpatrick, US Geological Survey; Tom Bullen, US Geological Survey

9:30 AM

56-7

The Imprint of Soil Biota Over Annual to Millennial Timescales

Marshall Wilkinson, University of Kentucky; Tim Pietsch, CSIRO

9:45 AM

Break

10:00 AM

56-8

Controls on ⁸⁷Sr/⁸⁶Sr of Plant- Available Ions and Soil Minerals across the Hawaiian Archipelago

Oliver A. Chadwick, Univ California - Santa Barbara; Louis A. Derry, Cornell University

10:15 AM

56-9

Quantitative Feedback Between the Rates of Soil Chemical Weathering and Colluvial Sediment Transport along a Hillslope Transect

Kyungsoo Yoo, University of Delaware; Simon, Marius Mudd, University of Edinburgh; Jonathan Sanderman, UC Santa Cruz; Ronald Amundson, U.C. Berkeley; Alex Blum, USGS

10:30 AM

56-10

Sedimentological, geochemical, and biological aspects of bisequal spodosols formed on Trail Ridge, south Georgia, USA

Donald M. Thieme, Valdosta State University

10:45 AM

56-11

Opposing Effects of Rainfall and Aerosol Washout on Soil Silicon Isotope Ratios

Carleton R. Bern, UC Santa Barbara; Mark Brzezinski, UC Santa Barbara; Charlotte Beucher, UC Santa Barbara; Oliver A. Chadwick, Univ California - Santa Barbara

11:00 AM

56-12

Organic Matter Composition and Soil Mineral Interactions across a Substrate Age Gradient in Hawai'i

Marc Gerald Kramer, UC Santa Cruz; Oliver Chadwick, Univ of California

11:15 AM

56-13

Using Rare Earth Element Signatures to Probe Cumulative Effects of Short-Term Biogeochemical Processes Over Long (0.3 – 4100 ky) Time Scales

Aaron Thompson, Univeristy of Georgia; Richard R.R. Rushforth, University of Arizona; Oliver Chadwick, Univ of California; Jon Chorover, University of Arizona

11:30 AM

56-14

Albite Dissolution Kinetics Under near-Equilbrium Conditions

Alexis Offner, Rice University; Rolf S. Arvidson, Rice Univ; Andreas Luttge, Rice Univ

11:45 AM

56-15

The Relationship Between Reactivity and Topography of Crystal Surfaces

Cornelius Fischer, Rice University; Rolf S. Arvidson, Rice Univ; Li Zhang, University of Southern California; Andreas Luttge, Rice Univ

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2008 Joint Annual Meeting (5-9 Oct. 2008): Soils through Time: Critical Zone Studies of Processes and Their Effects

56 Soils through Time: Critical Zone Studies of Processes and Their Effects