Journal of Himalayan Geology, Volume 5Wadia Institute of Himalayan Geology, 1994 - Geology |
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Page 1
Compositionallythe granitoids range fiom granodiorite to granite and are
peraluminous S-type, oorundum normative rocks. They show compositional
overlap with the host pelitic rocks. On the tectonic discrimination diagrams the
biotite ...
Compositionallythe granitoids range fiom granodiorite to granite and are
peraluminous S-type, oorundum normative rocks. They show compositional
overlap with the host pelitic rocks. On the tectonic discrimination diagrams the
biotite ...
Page 4
2) the non-foliated granitoids occupy mainly the granite field, while the various
phases of foliated granitoids, the biotite gneisses and the porphyritic gneisses
chemically define compositional range from granodiorite to granite. All the
granitoids ...
2) the non-foliated granitoids occupy mainly the granite field, while the various
phases of foliated granitoids, the biotite gneisses and the porphyritic gneisses
chemically define compositional range from granodiorite to granite. All the
granitoids ...
Page 112
Tectonic discrimination between these granites can be achieved by using various
chemical parameters. A1203 vs SiO2 and FeO'/(FeO'+ MgO) vs SiO2 (Fig. 13)
plots suggest that the granitoids under investigation are either IAG, or CAG or ...
Tectonic discrimination between these granites can be achieved by using various
chemical parameters. A1203 vs SiO2 and FeO'/(FeO'+ MgO) vs SiO2 (Fig. 13)
plots suggest that the granitoids under investigation are either IAG, or CAG or ...
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Contents
Cnouasv KEWAL K SHARMA D RAMESHWAR RAO Crustal anatexis | 1 |
N S VIRDI Basement Structures and their possible relation to Sedimentation and Tectonics in | 21 |
G S MEHROTRA S SARKAR D P KANUNGO A geological appraisal of Landslide Hazards | 35 |
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Common terms and phrases
02:53 IST MAGNITUDE acanthomorphic acritarchs Agglomeratic Slate Amritpur axial plane Bafliaz Formation band basin biotite Budhal calcite chert classified clasts conglomerate defined deformation Dehra Dun deposits diamictite dolomite Doushantuo Formation Dum Gali Quartzite facies fault plane feldspar fi'om field figure fine first flank flows folds foliation fossils Garhwal Geol glacial gneiss granites granitoids grey Gulabgarh Himachal Himalaya Himalayan Geology inversion Jour Jutogh Kashmir Kharnak Krol Ladakh landslides Lesser Himalaya limestone lineation lndia lnfrakrol metamorphic Nappe ofthe Panjal thrust Parautochthonous belt pebbles periglacial Permian phyllites Pir Panjal range plagioclase porphyries Proterozoic quartz quartzite Rampur Ramsu region rocks Salkhala samples sandstone schist sector sedimentary sediments sequence shale Sharma shear Shergol significance SiO2 slide slip slope soil stratigraphic structures Surv Suture Zone tectonic Tethyan Thakur thick Thinly bedded Uhl valley unconformably upper UTTARKASHI UTTARKASHI EARTHQUAKE Verma Wadia Institute WIMF/A Zanskar