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 64
... veins . in the massif . Hacket ( 1870 ) worked on the northwestern part of the massif . Subsequently no further work was done on this massif for a long time till early forties when P. K. Chatterjee ( 1941-42 ) , D. R. S. Mehta ( 1944-45 ) ...
... veins . in the massif . Hacket ( 1870 ) worked on the northwestern part of the massif . Subsequently no further work was done on this massif for a long time till early forties when P. K. Chatterjee ( 1941-42 ) , D. R. S. Mehta ( 1944-45 ) ...
Page 100
... vein of white pyrophyllite . It has earlier been noted that the quartz reefs in Bundelkhand are traversed by innumerable veins of milky white secondary quartz . The above feature might indicate that quartz reefs have locally altered to ...
... vein of white pyrophyllite . It has earlier been noted that the quartz reefs in Bundelkhand are traversed by innumerable veins of milky white secondary quartz . The above feature might indicate that quartz reefs have locally altered to ...
Page
... veins ; E - W trending prominent vein at centre is cut across and displaced by NE - SW trending veins which are in turn cut across by another set of E - W trending veins ( on one of which the compass rests ) ; compass points to north ...
... veins ; E - W trending prominent vein at centre is cut across and displaced by NE - SW trending veins which are in turn cut across by another set of E - W trending veins ( on one of which the compass rests ) ; compass points to north ...
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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