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 2
... Series . When the re - investigation was begun , the original proposal had been to compute the thickness of the Shillong Series of rocks . This necessitated the setting up of a lower reference plane for the strata ; it was found out ...
... Series . When the re - investigation was begun , the original proposal had been to compute the thickness of the Shillong Series of rocks . This necessitated the setting up of a lower reference plane for the strata ; it was found out ...
Page 4
... Series . Their mutual relationships puzzled him much . " The commonly received special evidences of intrusion are very obscurely developed ; ' and still less evidence is there for the supposition that the deposits of the Shillong Series ...
... Series . Their mutual relationships puzzled him much . " The commonly received special evidences of intrusion are very obscurely developed ; ' and still less evidence is there for the supposition that the deposits of the Shillong Series ...
Page 5
... Series " and the Gneissic Complex . This very critical question has caused confusion at various times . While Medlicott might have thought that there is a time - gap between the argillaceous and the arenaceous members of the Shillong " ...
... Series " and the Gneissic Complex . This very critical question has caused confusion at various times . While Medlicott might have thought that there is a time - gap between the argillaceous and the arenaceous members of the Shillong " ...
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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