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

在该项目中，将研究地壳成因气体的深度分布以及元素和同位素组成，以确定活动的圣安德烈亚斯断裂带的地壳气体和流体的来源、成因、发育和年龄。为了在一定程度上实现这一目标，在国际钻探计划(ICDP)的SAFOD主孔钻井过程中，应实时监测钻井液成分和气体含量。收集的气体和流体样本将进行分析，即稳定和贵重的同位素组成。该项目的目的是了解依赖于岩石/水相互作用的流体和气体的地球化学行为，地幔(稀有气体同位素)的可能影响，断层系统中的运输特性，以及它们在地震循环中的作用。

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.