In the western part of Sierra de los Filabres area, there are fine-grained metamorphic rock bands, showing a field aspect simitar to slates, as previously described in geological literature studied region. They variable thickness, from millimeters tens meters and appear intercalated schist succession. The geochemical resemblance between both types rocks (major, minor trace elements), determined...

The Hida granites, classified into the pre–Jurassic and Jurassic plutons in this study, are important components of belt, which is a Paleozoic–Mesozoic basement Japan arc underwent Permian to Triassic metamorphism during collision between North South China blocks. This study performed zircon U–Pb dating whole–rock geochemical analyses for granites from major plutonic bodies reveal geotectonic h...

Metamorphic core complexes in the western North American Cordillera are commonly interpreted as result of a single phase large-magnitude extension during middle to late Cenozoic. We present evidence that mylonitic shear zones Harcuvar and Buckskin-Rawhide west-central Arizona also accommodated an earlier Late Cretaceous early Paleocene. Microstructural data indicate substantial top-NE mylonitiz...

In the Santander Massif of Eastern Cordillera Colombia, intense Pliocene to Holocene sulfide-rich gold mineralization occurs in a six kilometers long section La Baja fault zone, where it crosses partially migmatized gneisses and intrusions Triassic-Cretaceous quartz monzonites granites. These intrusives are mineralogically texturally similar neosome migmatites that they intrude. The as medium l...

Abstract Fluid-pressure cycles are commonly invoked to explain alternating frictional and viscous deformation at the base of seismogenic crust. However, stress conditions geological environment fluid-pressure cycling unclear. We address this problem by detailed structural investigation a vein-bearing shear zone Sagelvvatn, northern Norwegian Caledonides. In dominantly zone, synkinematic quartz ...

Fluids are inferred to play a major role in the deformation and recrystallization of many minerals (e.g. quartz, olivine, halite, feldspar). In this study, we sought to identify the effect of fluids on grain boundary morphology and recrystallization processes in marble mylonites during shear zone evolution. We compared the chemistry, microstructure and mesostructure of calcite marble mylonites ...