EP21E:
Mountain Building, Denudation, and the Global Evolution of Biogeochemical Cycles I


Session ID#: 8700

Session Description:
The production of steep topography plays a major role in setting the global rates of physical denudation and sediment delivery to rivers and the oceans. High erosion rates in mountain belts can also have a profound impact on the carbon cycle, and link erosion and orogenesis to global climate. Rapid mineral supply to the critical zone can result in high rates of chemical weathering, which, depending on the mineralogy, can drawdown or release carbon dioxide. In addition, erosion of organic carbon from the terrestrial biosphere and its fluvial export can lead to a carbon sink via sedimentary burial. Here, we seek to better understand the controls on denudation and carbon fluxes in mountains, and the links/feedbacks which develop between erosion, the carbon cycle and global climate. We encourage research with findings drawn from field, laboratory and model studies, and those considering time frames from individual events, to millions of years.
Primary Convener:  Robert G Hilton, Durham University, Geography, Durham, United Kingdom
Conveners:  Isaac J Larsen, University of Massachusetts, Amherst, United States and A. Joshua West, University of Southern California, Los Angeles, CA, United States
Chairs:  Robert G Hilton, Durham University, Geography, Durham, United Kingdom, A. Joshua West, University of Southern California, Los Angeles, CA, United States and Isaac J Larsen, California Institute of Technology, Pasadena, United States
OSPA Liaison:  Robert G Hilton, Durham University, Geography, Durham, United Kingdom
Co-Organized with:
Earth and Planetary Surface Processes, and Biogeosciences

Cross-Listed:
  • B - Biogeosciences
  • PP - Paleoceanography and Paleoclimatology
  • T - Tectonophysics
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
1625 Geomorphology and weathering [GLOBAL CHANGE]
8175 Tectonics and landscape evolution [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Weathering Processes Across Extreme Erosional Gradients: Do Landslides Matter? (78612)
Robert Emberson, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, Niels Hovius, Deutsches GeoForschungsZentrum GFZ, Section 4.6 Geomorphology, Potsdam, Germany, Albert Galy, Université de Lorraine - CNRS, CRPG Centre de Recherches Pétrographiques et Géochimiques, Vandœuvre-lès-Nancy, France and Odin Marc, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany
Enhanced oxidative weathering in glaciated mountain catchments: A stabilising feedback on atmospheric carbon dioxide? (72907)
Kate Horan1, Robert G Hilton2, Kevin W Burton3, David S Selby4 and Chris J Ottley4, (1)University of Durham, Department of Earth Sciences, Durham, United Kingdom, (2)Durham University, Geography, Durham, United Kingdom, (3)Durham University, Durham, United Kingdom, (4)Durham University, Department of Earth Sciences, Durham, United Kingdom
Tectonic Forcing of Climate and Some Mysteries of the Cenozoic Carbon Cycle (Invited) (63675)
Maureen E Raymo, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States
Dynamic topography and the Cenozoic carbonate compensation depth (71513)
Siobhan Mary Campbell, Syracuse University, Syracuse, NY, United States, Robert Moucha, Syracuse University, Earth Sciences, Syracuse, NY, United States, Maureen E Raymo, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States and Louis A Derry, Cornell University, Department of Earth and Atmospheric Sciences, Ithaca, NY, United States
IODP Expedition 354: A Bengal fan record of Himalayan erosion, weathering and organic carbon burial during the Neogene. (Invited) (69178)
Christian France-Lanord, CRPG-CNRS-Univ. Lorraine, Centre de Recherches Pétrographiques et Géochimiques, Vandoeuvre les Nancy, France, Volkhard Spiess, University of Bremen, Faculty of Geosciences, Bremen, Germany, Adam Klaus, Texas A&M University, International Ocean Discovery Program, College Station, TX, United States, Albert Galy, Université de Lorraine - CNRS, CRPG Centre de Recherches Pétrographiques et Géochimiques, Vandœuvre-lès-Nancy, France, Valier Galy, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and IODP Expedition 354 Science party
Climate Modulation of Pb Isotopes in the Deep Indian Ocean Linked to the Himalayan Chemical Weathering (61415)
Albert Galy, Université de Lorraine - CNRS, CRPG Centre de Recherches Pétrographiques et Géochimiques, Vandœuvre-lès-Nancy, France, David James Wilson, Imperial College London, London, SW7, United Kingdom, Alexander M Piotrowski, University of Cambridge, Cambridge, United Kingdom and Julie C Gattacceca, Pôle Risques, Aix-en-Provence, France
Progressive impact of glaciation on mountain erosion since the Late Miocene (Invited) (67692)
Frederic Herman, University of Lausanne, Institute of Earth Surface Dynamics, Lausanne, Switzerland
The null hypothesis: steady rates of erosion, weathering and sediment accumulation during Late Cenozoic mountain uplift and glaciation (Invited) (60386)
Jane K. Willenbring, University of Pennsylvania, Department of Earth & Environmental Sciences, Philadelphia, PA, United States and Douglas J Jerolmack, University of Pennsylvania, Department of Earth & Environmental Science, Philadelphia, United States

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