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 42
... crystals are zoned , as also twinned . The outermost zone is sometimes non - harmoniously over- printed on the euhedral zone pattern in the inner portions . Relict zones are identified as such and also by means of alternating ...
... crystals are zoned , as also twinned . The outermost zone is sometimes non - harmoniously over- printed on the euhedral zone pattern in the inner portions . Relict zones are identified as such and also by means of alternating ...
Page 42
... crystals are zoned , as also twinned . The outermost zone is sometimes non - harmoniously over- printed on the euhedral zone pattern in the inner portions . Relict zones are identified as such and also by means of alternating ...
... crystals are zoned , as also twinned . The outermost zone is sometimes non - harmoniously over- printed on the euhedral zone pattern in the inner portions . Relict zones are identified as such and also by means of alternating ...
Page 47
... crystals floating in them . 4. Relict zone lamellae in plagioclase : These are evidences in favour of a fluid background for the separa- tion of the plagioclase crystals . Truncation of one set of zone patterns by another is indicative ...
... crystals floating in them . 4. Relict zone lamellae in plagioclase : These are evidences in favour of a fluid background for the separa- tion of the plagioclase crystals . Truncation of one set of zone patterns by another is indicative ...
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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