Stable Isotope Fractionation Factors for Serpentine, Talc, and Brucite: Implications for Rock Alteration at Mid-Ocean Ridges

PIs将研究大洋中脊环境、蛇绿岩和高山橄榄岩中的蛇纹石、滑石和水镁石的氧同位素和D/H分馏。研究结果将为稳定同位素解释超镁质岩石蚀变史提供必要的实验数据基础。新的数据也将导致对矿物-矿物和矿物-水地温计的理解。这也将有助于了解热液流体的循环深度和蛇纹岩化对洋中脊构造演化的影响。

Saccocia 9313980 The PIs will study oxygen-siotopic and D/H fractionation in serpentine, talc, and brucite from mid ocean ridge environments, ophiolites and alpine peridotites. The results will provide much needed foundation of experimental data to apply stable isotopes in interpreting alteration history of ultramafic rocks. The new data will also lead to an understanding of the mineral-mineral and mineral-water geothermometers. It would also lead to an understanding of the depth of circulation of hydrothermal fluids and impact of serpentinization on tectonic evolution of mid-ocean ridges.