Structures in Meso- and Micro-scales in the Sutlej section of the Higher Himalayan Shear Zone, Indian Himalaya

摘要: Study of structural geology the Higher Himalayan Shear Zone (HHSZ) in Sutlej section reveals S-C fabric, mineral fish, syntectonic growth porphyroblasts, stretching clasts, crenulation cleavages, intrafolial folds, duplexes, boudins, and micro-scale hat-shaped minerals rare sedimentary textures. In migmatites, fabrics are defined by various thicknesses leucosomes melanosomes curvatures. micro-scale, either fish or aligned undeformed grains characterize S-fabrics. Porphyroblasts were stretched nucleated syntectonically during extensional shearing. Hat shaped indicate brittle shear. Intrafolial folds some their axial traces parallel shear planes. two detachments within HHSZ, dominant ductile sense is top-to-NE, elsewhere exclusively top-to-SW. The HHSZ also While shearing postdated migmatization event boudinage was presumably a syn-migmatization process.