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 63
... massif which is more than 2500 m.y. old ( Crawford , 1970 ) . Areas Studied The following areas were mainly studied : i ) geologically mapped 130 sq km in Kakarwao- Karitoran - Girar area in the SW part of the massif ; ii ) examined in ...
... massif which is more than 2500 m.y. old ( Crawford , 1970 ) . Areas Studied The following areas were mainly studied : i ) geologically mapped 130 sq km in Kakarwao- Karitoran - Girar area in the SW part of the massif ; ii ) examined in ...
Page 64
... massif but no reports are available . Mallet ( 1869 , p.22 ) reported extensive gneisses and prominent quarts veins . in the massif . Hacket ( 1870 ) worked on the northwestern part of the massif . Subsequently no further work was done ...
... massif but no reports are available . Mallet ( 1869 , p.22 ) reported extensive gneisses and prominent quarts veins . in the massif . Hacket ( 1870 ) worked on the northwestern part of the massif . Subsequently no further work was done ...
Page 65
... massif has become distinct in the discovery ( Srivastava and Saha , 1975 ) of patches of Malwa Trap on the Betwa river near Sala on the northern margin of the massif ( Fig . 2 ) . To the north , the massif is covered by the Ganga ...
... massif has become distinct in the discovery ( Srivastava and Saha , 1975 ) of patches of Malwa Trap on the Betwa river near Sala on the northern margin of the massif ( Fig . 2 ) . To the north , the massif is covered by the Ganga ...
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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