Goldschmidt Session 09b: Carbonate Weathering Impacts on Critical Zone Evolution: Rapid Transformations of Structure and Function on Decade to Millennial Timescales
Session chairs: Pamela Sullivan (Univ Kansas) and Heather Buss (Univ Bristol), Keynote speaker: Jerome Gaillardet and Invited Speaker: Lixin Jin
Come join us in lovely Paris, August 13-18, 2017!
Abstract deadline is April 1st (23:59 CET). https://goldschmidt.info/2017/
Carbonate weathering rates are highly sensitive to modifications to salinity, water volumes, flow paths, pCO2, temperature and residence time that result from changes in climate, sea level and land cover. Over geologic time carbonate weathering is considered not to affect atmospheric CO2, yet at short-timescales (<3000 years) climatic and anthropogenic disturbances may impact global atmospheric carbon cycles. The structure and function of carbonate systems have been evaluated in terms of salinity, the presence/absence of soil/vegetation, the timing and amount of rainfall, temperature patterns and alterations to the ratio of calcite to dolomite weathering yet a unifying conceptual model has yet to emerge on the response of carbonate weathering in the Critical Zone to climate and land use/land cover change. We invite contributions that tackle carbonate weathering and its impact on the evolution of the Critical Zone, particularly those that integrate processes across disciplines including hydrogeology, biogeochemistry, geophysics, and geomorphology and those that employ isotope and modeling techniques to examine Critical Zone processes.