Journal of Himalayan Geology, Volume 4Wada Institute of Himalayan Geology, 1993 - Geology |
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Page 19
... field . The plot of the biolite composi- tions on a Al2O3 - FeO1 - MgO triangular diagram ( Fig . 5d ) shows that the biotites lie in the field which represents the coexistence of biotite with muscovite ( de Albuquerque , 1973 ) . TiO2 ...
... field . The plot of the biolite composi- tions on a Al2O3 - FeO1 - MgO triangular diagram ( Fig . 5d ) shows that the biotites lie in the field which represents the coexistence of biotite with muscovite ( de Albuquerque , 1973 ) . TiO2 ...
Page 52
... field ( 0 < k < 1 ) with the k values in the area varying from 0.01 to 0.83 . The variation in the k values is not continuous and ranges from nearly uniaxial oblate ellipsoid to triaxial flattening - type approaching the field of plane ...
... field ( 0 < k < 1 ) with the k values in the area varying from 0.01 to 0.83 . The variation in the k values is not continuous and ranges from nearly uniaxial oblate ellipsoid to triaxial flattening - type approaching the field of plane ...
Page 187
... field . This character is not clear in the illustrations given by Waterhouse and Gupta ( 1978 ) . Waagenoconcha and Cleiothyridina illustrated by Bhatt and Singh ( 1981 , Plate 1 , figures 3 , 4 ) are referable to the present species ...
... field . This character is not clear in the illustrations given by Waterhouse and Gupta ( 1978 ) . Waagenoconcha and Cleiothyridina illustrated by Bhatt and Singh ( 1981 , Plate 1 , figures 3 , 4 ) are referable to the present species ...
Contents
CONTENTS | 1 |
Petrography and Chemistry of Yangthang Granite Himachal | 15 |
Mineral Chemistry of Hornblende and Geobarometry of Ladakh Granite from Khardung | 27 |
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Abor Volcanics ammonoid Anticline assemblage Balkan bands barite basement basin batholith beds biotite boundary Callovian carbonate Chamba Chamba Thrust chert collision composition crustal Crystallines deformation Dehra Dun Earth Planet earthquakes east F2 folds fauna foliation Ganga Garhwal Geol gneiss Gondwana granite Granitoid Group Gupta Himalaya Himalayan belt Himalayan Geology India Indus Institute of Himalayan isotopic Jour Journal of Himalayan Jurassic Jutogh Kimmeridgian Krishna Kutch Ladakh layers Lesser Himalaya leucogranites limestone lithological Lower Mandi-Darla margin metamorphic microstructure minerals Moesian Nagrota Nepal Ophiolitic Ophiolitic Melange Paleozoic Permian phase phyllite plagioclase Plate Pradesh Proterozoic quartz quartzite Rampur volcanics ratio region river rocks samples sandstone Satluj schist sector sediments seismic sequence SHARMA shear Shillong Siang Sikkim Singh Siyom slope soils Spiti Spiti Shale stratigraphy stromatolites strontium structure Surv Syncline tectonic Tethyan thick Thrust Sheet Tithonian trend Upper Siwalik Wadia Institute wrench faults Yangthang