Records of the Geological Survey of India, Volume 125, Part 2The Survey, 1992 - 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 20
... granite gneiss of granite granodiorite composition and porphyritic hypersthene granite and are considered to be Archaean in age ( Sen , 1967 ) . In pertological details , the porphyritic hyper- sthene granite showing xenomorphic ...
... granite gneiss of granite granodiorite composition and porphyritic hypersthene granite and are considered to be Archaean in age ( Sen , 1967 ) . In pertological details , the porphyritic hyper- sthene granite showing xenomorphic ...
Page 22
... granite , Rajasthan a number of units of which the Tekan granite in considered to represent the youngest . Tekan gran- ite , situated in the BGC terrain of South Mewar plains , takes its name from the village Tekan ( 24 ° 28 ' : 74 ° 04 ...
... granite , Rajasthan a number of units of which the Tekan granite in considered to represent the youngest . Tekan gran- ite , situated in the BGC terrain of South Mewar plains , takes its name from the village Tekan ( 24 ° 28 ' : 74 ° 04 ...
Page 48
... granite with hornblende as the main mafic phase and sub - ordinate biotite . The foliation , where de- fined is due to alignment of hornblende and biotite . Epidote is present in appreciable amounts . Thorium is the predominant vari ...
... granite with hornblende as the main mafic phase and sub - ordinate biotite . The foliation , where de- fined is due to alignment of hornblende and biotite . Epidote is present in appreciable amounts . Thorium is the predominant vari ...
Contents
Overview of the DirectorinCharge | 107 |
East Coast DivisionII 117 | 117 |
West coast Division 127134 | 127 |
Copyright | |
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aeromagnetic amphibolite analysis Andhra Pradesh anomalies bands Barakar Barakar Formation Barren Measures Formation basemetal basin belt Bhutan BIHAR biotite block boreholes chalcopyrite charnockite clay coal seams COALFIELD coarse grained Code copper covered deposition depth range DISTRICT Division drilling dyke east eastern EXPLORATION FOR COAL fault felsic field season folds foraminifera geochemical GEOLOGICAL MAP geophysical gneiss Gondwana grade grey Group heavy mineral horizon INDEX India indicate intersected in boreholes investigation isobath isotopic Kamthi Formation lignite limestone line km lineaments located MADHYA PRADESH magnetic magnetite Maharashtra metamorphism migmatites million tonnes mineralisation NW-SE occur Orissa phyllite plagioclase PLATE-I Precambrian quartz quartz veins quartzite Rajasthan Raniganj Raniganj Formation REGIONAL EXPLORATION rocks Saharjuri sand sandstone schist seabed seam zones sector sediments shallow shelf silty Singhbhum sq km strike length studies sulphide survey Talchir Formation tectonic thickness Thimphu toposheet trending upto varies volcanic