Records of the Geological Survey of India, Volume 117, Part 2The Survey, 1986 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 36
... pluton have been induced by drag during emplacement of the pluton . Such features are not noticeable along the western or eastern edges ; to the immediate west of the pluton the quartzites of the Shillong Group dip towards the pluton ...
... pluton have been induced by drag during emplacement of the pluton . Such features are not noticeable along the western or eastern edges ; to the immediate west of the pluton the quartzites of the Shillong Group dip towards the pluton ...
Page 37
... pluton . The zone in which the strikes are changed in quite narrow , only about 300 m at the maximum . Within this narrow zone , two features are most striking . First , the dips of the Shillong rocks are almost invariably towards the ...
... pluton . The zone in which the strikes are changed in quite narrow , only about 300 m at the maximum . Within this narrow zone , two features are most striking . First , the dips of the Shillong rocks are almost invariably towards the ...
Page 40
... pluton . Level of Emplacement The metamorphic status of the Shillong Group beyond the aureole , together with the evidences for fracture controlled emplacement would serve to show that the pluton is mesozonal , or rather , upper ...
... pluton . Level of Emplacement The metamorphic status of the Shillong Group beyond the aureole , together with the evidences for fracture controlled emplacement would serve to show that the pluton is mesozonal , or rather , upper ...
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Common terms and phrases
albite amphibolite amphibolite facies aureole Babina banded iron-formation Basu Batholith Berwar Bijawar biotite bodies Bundelkhand Bundelkhand granitic massif Bundelkhand massif chlorite composition conglomerate country rocks crystals developed dips dolerite dykes emplacement enclaves esmeraldite exhibit feature feldspar folds foliation formation garnet Geol GEOLOGICAL SURVEY gneisses Gneissic Complex grade grained granite granite granitic rocks granitoid groundmass H₂O hornblende inclusions INDIA Records indicate intrusive Jhansi granite Jhararghat K-feldspar Kabrai Karesra Karitoran lamellae leucogranite magmatic magnetite Mahroni mapped Mau Ranipur megacrysts metabasic metamorphism microcline migmatites minerals muscovite Mylliem Mylliem Pluton myrmekite occur outcrops parallel pegmatite perthite phenocrysts plagioclase pluton porphyritic porphyritic coarse grained porphyritic granites Precambrian pyrophyllite quartz quartz reefs quartz-sericite rock quartzites recrystallization relict samples schist schistose sedimentary sediments sericite shear Shillong Group Shillong rocks Shillong Series South Khasi Batholith sphene strike structural suggest SURVEY OF INDIA syenitic textural trending twins upto veins xenoliths zone