EP14A:
Deciphering Isotope Signatures of Earth Surface and Critical Zone Processes I

Monday, 15 December 2014: 4:00 PM-6:00 PM
Chairs:  Fang-zhen Teng, University Of Washington, Seattle, WA, United States and Lin Ma, University of Texas, El Paso, El Paso, United States
Primary Conveners:  Fang-zhen Teng, University Of Washington, Seattle, WA, United States
Co-conveners:  Lin Ma, University Of Washington, Seattle, WA, United States and Jerome Gaillardet, Institut de Physique du Globe de Paris, Paris, France
OSPA Liaisons:  Jerome Gaillardet, Institute de Physique d Globe Paris, Paris, France

Abstracts Submitted to this Session:

4:00 PM
EP14A-01
 
Lithium Isotopes as Proxy of Continental Silicate Weathering
Xiao-Ming Liu1,2, Christoph Wanner3, Roberta L Rudnick2 and William F McDonough2, (1)Carnegie Inst of Washington, washington DC, DC, United States, (2)Univ Maryland, College Park, MD, United States, (3)Lawrence Berkeley National Laboratory, Earth Sciences Division, Berkeley, CA, United States
4:15 PM
EP14A-02
 
Large-scale fractionation of lithium isotopes during continental weathering and erosion: Insights from the Amazon River basin
Mathieu Dellinger1, Jerome Gaillardet2, Julien Bouchez2, Damien Calmels2 and Pascale Louvat2, (1)University of Southern California, Los Angeles, CA, United States, (2)Institute de Physique d Globe Paris, Paris, France
4:30 PM
EP14A-03
 
Magnesium isotope fractionation during continental weathering
Fang-zhen Teng, University Of Washington, Seattle, WA, United States, Kang-Jun Huang, Peking University, School of Earth and Space Sciences, Beijing, China, Wangye Li, USTC University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, Xiao-Ming Liu, Carnegie Institution for Science, Washington, DC, United States and Lin Ma, University of Texas at El Paso, El Paso, TX, United States
4:45 PM
EP14A-04
 
CZ-Tope: Using Measurements of Multiple Isotopes in One Setting to Understand Critical Zone Processes Occurring over Different Timescales
Susan L Brantley, Pennsylvania State University Main Campus, University Park, PA, United States
5:00 PM
EP14A-05
 
Molybdenum isotope fractionation in the critical zone
Julie C Pett-Ridge, Oregon State University, Corvallis, OR, United States, Christopher Siebert, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Sophie Opfergelt, University of Oxford, Oxford, United Kingdom, Kevin W Burton, University of Durham, Durham, United Kingdom and Alexander Halliday, Univ Oxford, Oxford, United Kingdom
5:15 PM
EP14A-06
 
THERMODYNAMIC CONTROL OF THE ISOTOPE COMPOSITION OF DIVALENT METAL CATIONS IN AQUEOUS SOLUTIONS AND IN CARBONATE MINERALS
Jacques Schott1, Vasileios Mavromatis2, Christopher R Pearce3, Toshiyuki Fujii4 and Eric H Oelkers1, (1)CNRS, Toulouse, France, (2)Graz University of Technology, Graz, Austria, (3)University of Southampton, Southampton, United Kingdom, (4)Kyoto University, Kyoto, Japan
5:30 PM
EP14A-07
 
Fractionation, concentration and flow: A model coupling stable isotope ratios to fluid travel time and chemical reactivity
Katharine Maher and Jennifer L Druhan, Stanford University, Geological and Environmental Sciences, Stanford, CA, United States
5:45 PM
EP14A-08
 
Silicon Isotopes As a New Method of Measuring Silicate Mineral Reaction Rates in the Critical Zone
Chen Zhu1, Augustus Scheafer1, Chao Wang1, Zhaoyun Liu2, Hongling Yuan3 and Rudolf Bastian Georg4, (1)Indiana University Bloomington, Bloomington, IN, United States, (2)Zhejiang University, Hangzhou, China, (3)Northwest Univrsity, Xian, China, (4)Trent University, Peterborough, ON, Canada
 
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