Structural Geology of the HimalayaP. S. Saklani |
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Page 19
... cleavage Rock cleavage is more prominently developed in most of these rocks and more varie ties of this do occur . However , for descriptive purpose they have been grouped under two broad zones : ( i ) fracture cleavage , and ( ii ) ...
... cleavage Rock cleavage is more prominently developed in most of these rocks and more varie ties of this do occur . However , for descriptive purpose they have been grouped under two broad zones : ( i ) fracture cleavage , and ( ii ) ...
Page 22
... cleavage ( B - axis ) : The trace of cleavage can easily be observed on bedding surfaces , and also the trace of bedding can be recog- nised on cleavage planes . These lines are prominent in the axial region of the fold and are parallel ...
... cleavage ( B - axis ) : The trace of cleavage can easily be observed on bedding surfaces , and also the trace of bedding can be recog- nised on cleavage planes . These lines are prominent in the axial region of the fold and are parallel ...
Page 140
... cleavage ( S , ) is observed in shaly rocks of Infra Krol and Krol Formations . The Foliation ( S1 ) in basic rocks is axial- plane - cleavage . Most common linear structure is the intersection of bedding and cleavage ( L1 ) . Minor ...
... cleavage ( S , ) is observed in shaly rocks of Infra Krol and Krol Formations . The Foliation ( S1 ) in basic rocks is axial- plane - cleavage . Most common linear structure is the intersection of bedding and cleavage ( L1 ) . Minor ...
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