[1] Despite the importance of hydromechanical effects in fault processes, not much is known about the interplay of chemical and mechanical processes, in part because the conditions are difficult to simulate in the laboratory. We report results from an experimental study of simulated fault gouge composed of rock salt sheared under conditions where pressure solution is known to operate. At slidin...

We apply a symmetry-based, statistical method for kine­ matic analysis of mesoscale fault-zone structures to resolve the trans­ port directions for the Rosario fault zone and Lopez StructuralCom­ plex in the San Juan Islands. Both moderately dipping fault zones accommodated large amounts of Late Cretaceous slip ( > 30 km), but the transport direction of nappes overlying these fault zones is con...

S U M M A R Y We perform a systematic analysis of crustal anisotropy along and around the Karadere–Düzce branch of the North Anatolian fault (NAF), which ruptured during the 1999 Mw 7.4 İzmit and Mw 7.1 Düzce earthquakes. A method consisting of an iterative grid search for the best shear wave splitting parameters in sliding time windows is applied to ∼22 000 measurements recorded in the 6-month...

Analytical solution for the problem of a surface-breaking long strike-slip fault in an elastic layer overlying an elastic half-space is well known. The purpose of this note is to obtain the corresponding solution for a blind fault. Since the solution is valid for arbitrary values of the fault-depth and the dip angle, the effects of these two important fault parameters can be studied numerically...

Clay-rich fault rocks have long been recognized to host distinctive fabric elements, and fault rock fabric is increasingly thought to play a fundamental role in fault mechanical behaviour in the brittle regime. Although the geometries of fabric elements in fault gouges have been described for almost a century, the genesis and evolution of these elements during shear, and their links to bulk mec...

We used optical experiments and high-speed photography to interpret the origins of tensile fractures that form during dynamic shear rupture in laboratory experiments. Sub-Rayleigh (slower than the Rayleigh wave speed, cR) shear ruptures in Homalite-100 produce damage zones consisting of an array of tensile cracks. These cracks nucleate and grow within cohesive zones behind the tips of shear rup...

This research aims to examine the relationship between hydrothermal alteration and mineralization (ore mineralogy) in study area geological structures deformation mechanism. The was determined based on petrographic analysis, ore mineralogy which microscopic analysis. mechanism is by paleo stress analysis using win-tensor, direction of principal joints/veins faults calculated right-dihedron meth...