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 87
... sericite film on quartz grains . Locally the quartz grains are quite large and are of the order of 1 cm x 0.8 cm , 1.8 cm x 0.6 cm , etc. But development of such large grains are almost everywhere inexplicably restricted to the surface ...
... sericite film on quartz grains . Locally the quartz grains are quite large and are of the order of 1 cm x 0.8 cm , 1.8 cm x 0.6 cm , etc. But development of such large grains are almost everywhere inexplicably restricted to the surface ...
Page 88
... sericite rocks ( hatured ) in the granitic country , NE of Karitoran ( based on aerial photograph on scale 1 : 20,000 ) . Area TABLE IV Comparative study of trends of ' Schistosity. mostly idiomorphic but in some of the grains , the pyra ...
... sericite rocks ( hatured ) in the granitic country , NE of Karitoran ( based on aerial photograph on scale 1 : 20,000 ) . Area TABLE IV Comparative study of trends of ' Schistosity. mostly idiomorphic but in some of the grains , the pyra ...
Page 90
... sericite which could have been a constituent resulting from the in situ granitisation of these quartz- sericite rocks which otherwise mineralogically resemble a metamorphosed psammopelitic rock . As already indi- cated , granites ...
... sericite which could have been a constituent resulting from the in situ granitisation of these quartz- sericite rocks which otherwise mineralogically resemble a metamorphosed psammopelitic rock . As already indi- cated , granites ...
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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