Himalaya: Geological Aspects, Volume 2P. S. Saklani Contributed articles. |
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Page 63
... field and only a few in granite field ( Fig . 3 ) which according to Streckeisen ( 1973 ) are included in the granite field . 2 2 2 From the chemical data , it has been observed that the molecular proportion of Al2O , is greater than ...
... field and only a few in granite field ( Fig . 3 ) which according to Streckeisen ( 1973 ) are included in the granite field . 2 2 2 From the chemical data , it has been observed that the molecular proportion of Al2O , is greater than ...
Page 67
... field , consistent with similar observations of Colemn and Donate ( 1979 ) . The plots also lie within or close to the field of granophyre as indicated by Barker ( 1970 ) . ( ALK - Na ) PAGIOCLASE MUSCOVITE CORDIERITE Fig 4 Ca BIOTITE ...
... field , consistent with similar observations of Colemn and Donate ( 1979 ) . The plots also lie within or close to the field of granophyre as indicated by Barker ( 1970 ) . ( ALK - Na ) PAGIOCLASE MUSCOVITE CORDIERITE Fig 4 Ca BIOTITE ...
Page 68
... field of granophyre as com- piled by Barker ( 1970 ) . The plots of the Buniyar granite in the system Qz - Ab - Or - An - H2O at PH2O - 5 Kb ( Winkler , 1976a ) lie mostly away from the cotectic surface P - E - E , and lie in the fields ...
... field of granophyre as com- piled by Barker ( 1970 ) . The plots of the Buniyar granite in the system Qz - Ab - Or - An - H2O at PH2O - 5 Kb ( Winkler , 1976a ) lie mostly away from the cotectic surface P - E - E , and lie in the fields ...
Contents
The Central Himalayan Gneisses in Northern Pakistan | 1 |
LowPressure Metamorphism in a Regionally Metamorphic | 49 |
The Aureole Zone and Metasediments of Dhauladhar Chaori Khas H P | 75 |
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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 Darjeeling developed diagram eastern fabric facies faults feldspar folds foliation Formation fractures Fuchs 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 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