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 19
... variety of geothermal gradients . In order to arrive at an estimate of this parameter it is necessary to have information on the mutual relationships between the three polymorphs of Al , SiO . Kyanite has not so far been reported from ...
... variety of geothermal gradients . In order to arrive at an estimate of this parameter it is necessary to have information on the mutual relationships between the three polymorphs of Al , SiO . Kyanite has not so far been reported from ...
Page 36
... variety is developed around amphiboles and form septa in the rock ; the red variety is developed around crystals of magnetite . The green biotite is explained as due to breakdown of amphibole aided by potash influx : — $ Amphibole ( Ca ...
... variety is developed around amphiboles and form septa in the rock ; the red variety is developed around crystals of magnetite . The green biotite is explained as due to breakdown of amphibole aided by potash influx : — $ Amphibole ( Ca ...
Page 93
... variety is cut across by a medium grained variety which in turn includes transverse bodies and lenticles of a very fine grained aphanitic dolerite . Such relation is seen on the outskirts of Chhikahra village NNW of Mahoba - ( Basu ...
... variety is cut across by a medium grained variety which in turn includes transverse bodies and lenticles of a very fine grained aphanitic dolerite . Such relation is seen on the outskirts of Chhikahra village NNW of Mahoba - ( Basu ...
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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