Himalaya: Geological Aspects, Volume 2P. S. Saklani Contributed articles. |
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Page 43
... schistosity . The schistosity is defined by a strong preferred orientation of coarse matrix , white mica and biotite which are axial planar to F2 folds . An early weakly developed schistosity ( S , ) is quite often clearly preserved by ...
... schistosity . The schistosity is defined by a strong preferred orientation of coarse matrix , white mica and biotite which are axial planar to F2 folds . An early weakly developed schistosity ( S , ) is quite often clearly preserved by ...
Page 80
... schistosity ( S , ) . Lepidoblastic shreds of biotite - I occur along the foliation ( S , ) . Greenish to brown biotite - II is superimposed on the foliation ( S ) which is also transgressed by muscovite- I. Besides , the rocks contain ...
... schistosity ( S , ) . Lepidoblastic shreds of biotite - I occur along the foliation ( S , ) . Greenish to brown biotite - II is superimposed on the foliation ( S ) which is also transgressed by muscovite- I. Besides , the rocks contain ...
Page 652
... schistosity planes . Microscopically , biotite , muscovite and lenticles of quartz define the schistosity . Biotite shows light brown to dark brown pleochroism . Garnet occurs as small grains wrapped by schistosity planes . Monigong ...
... schistosity planes . Microscopically , biotite , muscovite and lenticles of quartz define the schistosity . Biotite shows light brown to dark brown pleochroism . Garnet occurs as small grains wrapped by schistosity planes . Monigong ...
Contents
The Central Himalayan Gneisses in Northern Pakistan | 1 |
LowPressure Metamorphism in a Regionally Metamorphic | 49 |
The Buniyar Granite of the Kashmir Himalaya | 61 |
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Acharyya Almora amphibolite andalusite anticline assemblages augen gneiss axes axial plane axis Barun bedding belt Berinag Bhutan biotite Buxa Central Crystallines Chail Chail Nappes chlorite Chomolongma crenulation cleavage developed diagram fabric facies faults feldspar folds foliation Formation fractures Gansser Garhwal Garhwal Himalaya garnet Geol Geology girdle gneiss Gondwana grade grains granite gneiss Group Himalaya India isograd Jour Jutogh Khola Khumbu Kumaun kyanite Lesser Himalaya limestone lithological lower Main Central Thrust Makalu Massif mesoscopic metasediments mica schist micaceous migmatites mineral lineation muscovite mylonitic nappe Nepal North Almora Thrust occur orientation parallel pelitic Phaplu phase of deformation phyllites plagioclase porphyroblasts Pradesh Precambrian quartz quartzite reaction regional metamorphism rocks S₂ Saklani schist schistosity sedimentary sediments sequence sericite shear sillimanite Simla Siwalik Siyom slates staurolite stratigraphic strike-slip structural Surv syncline tectonic temperature Tethyan texture Thimpu thrust sheet thrust zone tourmaline trend upper Vaikrita Valdiya valley