Goldschmidt Session 09j: Tracking Earth Surface Processes: Isotope Tracing of Particulate and Dissolved Fluxes

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Monday, February 6, 2017 - 12:00 to Saturday, April 1, 2017 - 20:30

We invite abstract submissions for Godschmidt Session 09j: Tracking Earth Surface Processes: Isotope Tracing of Particulate and Dissolved Fluxes. Please join us in Paris, August 13-18, 2017. Abstract submission deadline is April 1, 2017. https://goldschmidt.info/2017/ 

Keynote Speaker: François Chabaux (University of Strasbourg) 

The breakdown of rock into soil is controlled by the complex interplay of geochemical, geomorphological, hydrological and biological processes together with the effect of human activities. The identification and quantification of the processes that govern the evolution of the Critical Zone– Earth’s living skin – requires multiple tools from across an array of disciplines. The application of multiple isotope systems, including traditional isotopes (e.g., of C, H, O, S, Sr), cosmogenic nuclides (e.g. 10Be, 26Al), fallout radionuclides (e.g. 137Cs, 239/240Pu), short-lived natural U and Th-series radionuclides (e.g., 234U, 210Po, 228Th, 228Ra, 210Pb and 226Ra), and non-traditional stable isotopes (e.g., of Li, Mg, Si, Ca, Fe, Cr, Zn, Cu), together with other geochemical and mineralogical tracers (e.g., element ratios, alteration indices), enable us to decipher linkages and mechanisms of weathering processes and quantify dissolved and particulate fluxes across varying lithologies, tectonic settings, climatic conditions and anthropogenic influences– we call this initiative CZ-Tope. The goals are to identify dominant weathering and erosion drivers, to quantify rates of weathering, erosion, and sediment accumulation, and to consider the implications of these processes for global biogeochemical cycles. This session invites contributions investigating weathering, erosion and sediment accumulation across broad spatial (mineral to catchment to depositional basin) and temporal scales (days to months to millennia and beyond) and in diverse environmental settings. Approaches may include laboratory experiments, modeling, development and application of proxies, and field investigations and inter-comparisons.

Convenors:

Grit Steinhoefel (Alfred Wegener Institute, grit.steinhoefel@awi.de)

Talitha Santini (University of Queensland)

Ashlee Dere (University of Nebraska - Omaha)

Pamela Sullivan (University of Kansas)

Claude Hillaire-Marcel (Université du Québec à Montréal)

Mark Baskaran (Wayne State University)

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