Fluids, Faulting and In Situ Stress to 9 km in the KTB Borehole, Germany

PI建议分析9 km KTB钻孔的数据，以更好地了解深度、岩性、当代地应力场和地壳流体流动性之间的关系。这项工作将通过接近脆性-韧性过渡深度的地壳剖面来研究构造对渗透率和渗透率各向异性的控制。该项目将包括测量KTB主井眼和KTB先导井眼（分别钻到9公里和4公里）所穿透的断层和裂缝的分布和方向，通过与裂缝相关的热异常和流动异常进行比较，研究它们的水文特性，最后尝试将相对渗透性裂缝与当前应力场联系起来。通过记录裂缝方向和水文性质之间的系统关系，PI希望为解释9100米的水力性质提供一个框架

9614267 Zoback The PI proposes to analyze data from the 9 km KTB borehole to better understand the relationships among depth, lithology, the contemporary in situ stress field, and the mobility of crustal fluids. The work will investigate tectonic controls on permeability and permeability anisotropy through a crustal section that approaches the depth of the brittle-ductile transition. The project will include measurements of the distribution and orientation of faults and fractures penetrated by both the main KTB borehole and the KTB pilot hole (drilled to 9 and 4 km, respectively), a study of their hydrologic properties through comparison with fracture-related thermal and flow anomalies, and finally an attempt to relate the relatively permeable fractures with the current stress field. By documenting systematic relationships between fracture orientation and hydrologic properties, the PI expects to provide a framework for interpretation of hydraulic properties to 9100 m. ***