On the geochemistry of crustal fluids and gases of the San Andreas Fault Zone - Real-time mud gas monitoring during ICDP-SAFOD drilling -

在本项目中，将研究地壳起源气体的深度分布以及元素和同位素组成，以确定活跃的圣安德烈亚斯断裂带地壳气体和流体的起源、成因、发育和年龄。为了在一定程度上实现这一目标，在国际大陆钻井计划（ICDP）的SAFOD主孔钻井时，应实时监测钻井泥浆成分和气体含量。收集的气体和流体样品将进行分析，即稳定和稀有同位素组成。该项目的目的是了解流体和气体的地球化学行为，这取决于岩石/水的相互作用、地幔可能的影响（稀有气体同位素）、断层系统中的输送特性及其在地震周期中的作用。

Within this project gases of crustal origin will be investigated on their depth distribution as well as elemental and isotopic compositions in order to determine the origin, genesis, development and ages of crustal gases and fluids in the active San Andreas fault zone. To achieve this goal in part, the drill mud composition and gas content should be monitored in real-time while drilling of the SAFOD main hole of the International Contoinental Drilling Programm (ICDP). Collected gas and fluid samples will be analyzed namely for stable and noble isotope composition. The aim of the project is to understand the geochemical behavior of fluids and gases depending on rock/water interaction, possible influences from the earth mantle (noble gas isotopes), transportation properties in fault systems, and their role in the earthquake cycle.