Structural Geology of the HimalayaP. S. Saklani |
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Page 51
... granitoid and the country rocks is concordant and gradational . Sharp contact has been observed only at some places where the country rock is either in direct contact with coarse granitoid rock or the former occurs as raft in the latter ...
... granitoid and the country rocks is concordant and gradational . Sharp contact has been observed only at some places where the country rock is either in direct contact with coarse granitoid rock or the former occurs as raft in the latter ...
Page 52
... granitoid rocks are nearly indentical in composition . From felspathic schist to coarse granitoid rock there is a tendency of an increase of Si and K and a decrease of Ca , Mg and Fe . The other components do not show specific trend ...
... granitoid rocks are nearly indentical in composition . From felspathic schist to coarse granitoid rock there is a tendency of an increase of Si and K and a decrease of Ca , Mg and Fe . The other components do not show specific trend ...
Page 54
... granitoid rocks of Dwarahat - Almora region . Misch ( 1949 ) has also advocated metasomatic granitization to be the cause for the similar rocks of the Nanga Parbat area . Although the present study favours metasomatism as one of the ...
... granitoid rocks of Dwarahat - Almora region . Misch ( 1949 ) has also advocated metasomatic granitization to be the cause for the similar rocks of the Nanga Parbat area . Although the present study favours metasomatism as one of the ...
Common terms and phrases
Almora anatexis anticline augen axes axial plane Badrinath basin beds Bhattacharya biotite Blaini cleavage Delhi developed direction earthquakes eastern Eocene F₂ fabric facies fault folds foliation Gansser Garhwal Garhwal Himalaya garnet Geol gneiss grained granitic gneisses Himalaya Indian Indian plate Indo-Pakistan Jour Jutogh Kashmir Klootwijk Krol Belt Krol thrust Kumaun Kumaun Himalaya Ladakh Lesser Himalaya limestone Lingtse Gneiss Lower Main Boundary Main Central Thrust metamorphism mica schist micaceous Middle Siwalik migmatite mineral lineation Mukhem mylonitic Naini nappe Nepal observed occur ophiolite orientation Pakistan palaeomagnetic parallel phase of deformation phyllite plagioclase porphyroblastic quartz quartzite Quetta region rocks rotation S₁ S₂ Saklani sandstone schist schistosity sedimentary sediments seismicity sequence shales shear Simla Sinha Roy Siwalik Siwalik Formation slate stratigraphic structures Surv Suture Zone syncline tectonic tectonites thrust sheet thrust zone Tibetan slab tourmaline trend units Upper Valdiya valley volcanics