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Page 548
The spread of the six-phase assemblage over a limited distance from the isograd
may be attributed to the Mn-content of garnet due to which the reaction (2)
becomes a continuous (Fe—Mg—Mn) reaction. On the other hand, five-phase ...
The spread of the six-phase assemblage over a limited distance from the isograd
may be attributed to the Mn-content of garnet due to which the reaction (2)
becomes a continuous (Fe—Mg—Mn) reaction. On the other hand, five-phase ...
Page 549
three-phase field of st ——bi —gt towards higher XMg side in the AFM projection
with the progress of the reaction. Similarly all the AFM phases of the reaction (6)
become Mg-rich and the growth of staurolite and biotite continues.
three-phase field of st ——bi —gt towards higher XMg side in the AFM projection
with the progress of the reaction. Similarly all the AFM phases of the reaction (6)
become Mg-rich and the growth of staurolite and biotite continues.
Page 550
Sillimanite-biotite isograd Considering the difference in the AFM topology in the
zone D and E (Figs. ll and 12). it is evident that the reaction at the isograd may be
ky = si ...(4) which involves polymorphic transformation of kyanite to sillimanite.
Sillimanite-biotite isograd Considering the difference in the AFM topology in the
zone D and E (Figs. ll and 12). it is evident that the reaction at the isograd may be
ky = si ...(4) which involves polymorphic transformation of kyanite to sillimanite.
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Contents
The Central Himalayan Gneisses in Northem Pakistan | 1 |
Ductile Shearing in Peridotites of Spongtang Nappe Ladakh | 27 |
LowPressure Metamorphism in a Regionally Metamorphic | 39 |
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Common terms and phrases
Almora amphibolite andalusite assemblages augen gneiss axes axial plane bedding belt Berinag Bhutan biotite Buxa Central Crystallines Chail Chail Nappes chlorite Chomolongma crenulation cleavage defined defonnation developed eastem F2 folds fabric facies faults feldspar field first flattening foliation Fonnation Formation fractures gamet Gansser Garhwal Garhwal Himalaya garnet Geol Geology girdle gneiss Gondwana grade grains granite gneiss Group Himalaya isograd Jour Jutogh Khola Khumbu Krol Kumaun kyanite Lesser Himalaya limestone lithological lower Main Central Thrust Makalu metasediments mica schist micaceous migmatites mineral lineation muscovite mylonitic nappe Nepal northem occur orientation parallel pattem pelitic Phaplu phase of deformation phyllites plagioclase porphyroblasts Pradesh Precambrian quartz quartzite reaction rocks Saklani schist schistosity sedimentary sediments sequence sericite shear significant sillimanite Simla Siwalik Siyom slates southem staurolite stratigraphic strike-slip structural Surv syncline tectonic texture Thimpu thrust sheet thrust zone trend upper Valdiya valley westem
Bibliographic information
| Title | Himalaya: geological aspects Himalaya: Geological Aspects, P. S. Saklani, ISBN 8189304003, 9788189304003 Volume 15 of Current trends in geology Volume 2 of Himalaya:, P. S. Saklani, ISBN 8189304003, 9788189304003 |
| Author | P. S. Saklani |
| Editor | P. S. Saklani |
| Publisher | Satish Serial Pub. House, 2005 |
| ISBN | 8190228986, 9788190228985 |
| Length | 660 pages |
| Subjects | › › Geology Geology, Structural Metamorphism (Geology) Science / Earth Sciences / Geology |
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