[Erzinger] On the geochemistry of crustal fluids and gases of the San Andreas Fault Zone - Real-time mud gas monitoring during ICDP-SAFOD drilling -
German Title: On the geochemistry of crustal fluids and gases of the San Andreas Fault Zone - Real-time mud gas monitoring during ICDP-SAFOD drilling -
Current Status: completed
Main Applicant:Prof. Dr. Joerg Erzinger
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.
Wiersberg, Thomas, Erzinger, Jörg (2008). "Origin and spatial distribution of gas at seismogenic depths of the San Andreas Fault from drill-mud gas analysis" Applied Geochemistry 23 p1675-1690
Wiersberg, Thomas, Erzinger, Jörg (2007). "A helium isotope cross-section study through the San Andreas Fault at seismogenic depths" Geochemistry, Geophysics, Geosystems 8 (1) p1-12