Use of geochemical and stable isotopic methods as proxies for erosion and weathering intensity
Christian France-Lanord Guillaume Caro
Centre de Recherches Pétrographiques et Géochimiques, Nancy France.
MSc. -- University of Notre Dame, U.S.A. B.A. -- The College of Wooster, U.S.A.
Email: firstname.lastname@example.org Tel: +33(0)3 83 59 42 42
I have a background in igneous and metamorphic petrology but decided to switch focus for my PhD to study isotope geochemistry in the Himalayas and how we can use it to reconstruct paleoclimate and extend it to a paleoerosional proxy. Specifically, I am using radiogenic calcium isotopes to try to distinguish between silicate and carbonate sources in weathering products such as river water and sediment. Many researchers have tried to use strontium isotopes to do this task, but a number of factors complicate the interpretation of this data. I have been analyzing samples and developing this new Ca technique and our first results confirm that the use of radiogenic calcium isotopes can be used to distinguish between silicate and carbonate sources. I will also be conducting analyses using oxygen, carbon and silicon isotopic techniques.