Himalaya: Geological Aspects, Volume 2Contributed articles. |
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Page 252
"G 45 Fig. 45. Synoptic quartz fabric diagram of maxima (5% to 15%) from 28
diagrams (5850 c-axes) in sections nonnal to L2 and S2. The maxima are
distributed in an annular girdle between two small circles with apical angles FIG.-
4' Fig. 46.
"G 45 Fig. 45. Synoptic quartz fabric diagram of maxima (5% to 15%) from 28
diagrams (5850 c-axes) in sections nonnal to L2 and S2. The maxima are
distributed in an annular girdle between two small circles with apical angles FIG.-
4' Fig. 46.
Page 259
INTERPRETATION OF QUARTZ FABRIC DATA Introductory Remarks : The
symmetry pattern of the quartz fabric represents the kinematics of rock
deformation . A higher order of symmetry emerges from rocks undergoing single
phase of ...
INTERPRETATION OF QUARTZ FABRIC DATA Introductory Remarks : The
symmetry pattern of the quartz fabric represents the kinematics of rock
deformation . A higher order of symmetry emerges from rocks undergoing single
phase of ...
Page 261
fabric has been subjected to a mechanism similar to rolling of metal under
compression and stretching ; seems to be ... by convergent movement along the
direction of tectonic transport , the earlier fabrics are modified and rotated around
' a ...
fabric has been subjected to a mechanism similar to rolling of metal under
compression and stretching ; seems to be ... by convergent movement along the
direction of tectonic transport , the earlier fabrics are modified and rotated around
' a ...
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Contents
The Central Himalayan Gneisses in Northern Pakistan | 1 |
LowPressure Metamorphism in a Regionally Metamorphic | 39 |
The Buniyar Granite of the Kashmir Himalaya | 61 |
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Common terms and phrases
Almora angle appears assemblages associated augen axes axial axis bands base bedding belt biotite boundary Chail chlorite cleavage composition consists contain continuous crenulation crystalline deformation developed diagram direction District eastern exposed fabric facies faults folds foliation Formation formed fractures Garhwal garnet Geol Geology girdle gneiss grade grains granite Group higher Himalaya inclusions increase India indicate isograd Jour Jutogh Krol Kumaun kyanite Lesser Himalaya limestone lineation lower Main Central major metamorphism mica migmatites mineral movement muscovite mylonitic nappe Nepal observed occur orientation parallel pelitic phase phyllites plagioclase plane porphyroblasts present pressure quartz quartzite range reaction region relief represented result rocks Saklani schist schistosity sequence sericite sets shear sheet sillimanite similar Siwalik slates southern staurolite strain stratigraphic structural suggests surfaces Table tectonic temperature texture thickness thrust trend units upper valley West zone