Ninth International Symposium on Geochemistry of the Earth’s Surface Glenn Miller Ballroom, University Memorial Center University of Colorado Boulder Symposium schedule Thursday, June 2 4:30-7 pm Registration University Memorial Center, South Terrace 5-7 pm Ice-breaker reception University Memorial Center, South Terrace (rain backup: UMC Room 265) Friday, June 3 7:00 am Glenn Miller Ballroom open for setting up Poster session 1 7:30-9:30 am Registration University Memorial Center, Ballroom foyer 8:00 am Coffee 8:30-9:00 am Sigurdur Gislason, Suzanne Anderson Welcome & introduction Theme 1: Rivers— Landscape Integration (chair: Sigurdur Gislason) 9:00-9:45 am James Syvitski Global sediment fluxes to the Earth’s coastal ocean 9:45-10:30 am Poster session 1 and morning refreshments 10:30-11:15 am Eric Oelkers The role of riverine particulate material on the global cycles of the elements 11:15-12:00 Jean-Dominique Meunier Importance of weathering and human perturbations on the riverine transport of Si 12:00-1:30 pm Lunch- on your own 1:30-2:15 pm Jérôme Gaillardet The Lesser Antilles, a natural laboratory for erosion studies Theme 2: Critical Zone Processes (chairs: Steve Banwart and Suzanne Anderson) 2:15-3:00 pm Sue Brantley What controls the transformation of bedrock to soil? 3:00-5:00 pm Poster session 1 and afternoon refreshments Saturday, June 4 8:00 am Coffee 8:30-9:00 am GES Senior Keynote: Bob Berner Theme 2: Critical Zone Processes (continues) 9:00-9:45 am François Chabaux U-series isotopes and weathering 9:45-10:30 am Poster session 1 and morning refreshments 10:30-11:15 am Kyungsoo Yoo Evolution of hillslope soils: The geomorphic theater and the geochemical play 11:15-12:00 Mark Hodson Carbon sequestration, dating and palaeoenvironmental reconstruction - the potential of earthworm secreted calcium carbonate 12:00-1:30 pm Lunch- on your own Theme 3: Organic Contaminants (chair: Stefano Bernasconi) 1:30-2:15 pm Mark Chappell Solid-phase considerations for the environmental fate of nitrobenzene and triazine munition constituents in soils 2:15-3:00 pm Thomas Hofstetter Tracking transformation processes of organic micropollutants in aquatic environments 3:00-5:00 pm Poster session 1 and afternoon refreshments Sunday, June 5 7:00 am Glenn Miller Ballroom open for setting up Poster session 2 8:00-9:00 am Posters and coffee Theme 3: Organic Contaminants (continues) 9:00-9:45 am Kristin Schirmer Identifying biological effects of organic contaminants in surface- and groundwater 9:45-10:30 am Poster session 2 and morning refreshments Theme 4: Microbial Geochemistry (chair: Alexis Templeton) 10:30-11:15 am Lesley Warren By design: the architecture of microbial redox cycling 11:15-12:00 Andreas Kappler Arsenic redox transformation by humic substances and Fe minerals 12:00-1:30 pm Buffet lunch in Glenn Miller Ballroom 1:30-2:15 pm Nathan Yee Geomicrobiology of selenium: Life and death by selenite Theme 5: Environmental Geochemistry (chairs: Marty Goldhaber and Vala Ragnarsdottir) 2:15-3:00 pm Harald Sverdrup Assessing the sustainable global population and phosphate supply, using a systems dynamics assessment model 3:00-5:00 pm Poster session 2 and afternoon refreshments Monday, June 6 Morning- optional field trips or time on your own Theme 5: Environmental Geochemistry (continues) 1:30-3:30 pm Poster session 2 3:00 pm Afternoon refreshments 3:30-4:15 pm Nikolaos P. Nikolaidis Human impacts on soils: Tipping points and knowledge gaps 4:15-5:00 pm Eric Sundquist Historical influence of soil and water management on sediment and carbon budgets in the United States 6:00 pm Conference Banquet, Millennium Hotel Buses will take conferees to and from banquet Tuesday, June 7 8:00-9:00 am Poster session 2 and coffee Theme 6: Special session in honor of Bob Berner: Global Geochemical Cycles (chair: Jérôme Gaillardet) 9:00-9:45 am Fred Mackenzie Land-sea C and nutrient fluxes and coastal ocean CO2 exchange and acidification: Past, present and future 9:45-10:30 am Baerbel Hönisch Ocean acidification during the Cenozoic 10:30-12:00 Poster session 2 and morning refreshments 12:00-1:00 pm Lunch- on your own; GES business meeting in Ballroom 1:00-1:45 pm Niels Hovius Erosion-driven drawdown of atmospheric carbon dioxide: the organic pathway 1:45-2:30 pm Derek Vance Isotopic tracers of chemical weathering and consequences for marine geochemical budgets 2:30 pm Closing