Records of the Geological Survey of India, Volume 124, Part 2The Survey, 1991 - 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 62
... gravity anomalies to the observed anomalies , depending on their individual varying thickness . The non - uniform low gravity effects produced by the Quaternaries alone , are much more in magnitude than the halite anomalies . Sepa ...
... gravity anomalies to the observed anomalies , depending on their individual varying thickness . The non - uniform low gravity effects produced by the Quaternaries alone , are much more in magnitude than the halite anomalies . Sepa ...
Page 63
... gravity formula of 1967 was used with a density value of 2.67 g / c.c . for reduction of the gravity data . Results of the present survey is presented in figure - 1 . Gravity survey traced the extension of the Ranigunj basin upto ...
... gravity formula of 1967 was used with a density value of 2.67 g / c.c . for reduction of the gravity data . Results of the present survey is presented in figure - 1 . Gravity survey traced the extension of the Ranigunj basin upto ...
Page 70
... GRAVITY AND MAGNETIC RESPONSES [ Code No GP / - / WB , BHR / 88 / 5 ] T.K. Ghatak , S.P. Dasgupta , Kunal Chakraborty Central Geophysics Division . Gravity in mgal ? 1001 Gravity in mgal Fig . 26 ° 00'00 " - 26 ° 45 ' N & Longs . 91 ...
... GRAVITY AND MAGNETIC RESPONSES [ Code No GP / - / WB , BHR / 88 / 5 ] T.K. Ghatak , S.P. Dasgupta , Kunal Chakraborty Central Geophysics Division . Gravity in mgal ? 1001 Gravity in mgal Fig . 26 ° 00'00 " - 26 ° 45 ' N & Longs . 91 ...
Contents
CENTRAL HEADQUARTERS | 6 |
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING | 143 |
Overview of the Deputy Director General | 211 |
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Common terms and phrases
aeromagnetic amphibolite AMSE Wing analysis Andhra Pradesh anomalies assemblage bands Barakar Formation BARREN MEASURES FORMATION basement basin Bhutan block boreholes carbonaceous Central chalcopyrite clay coal seams Coal Wing coarse grained Code copper mineralisation core Cruise deposits depth range DISTRICT drilling east eastern ENE-WSW evaluation EXPLORATION FOR COAL faults felsic field season fold geochemical GEOLOGICAL MAP gneisses Gondwana grade granite gravity grey Group heavy mineral ilmenite INDEX India indicate intersected investigation Kamthi Formation limestone lineament MADHYA PRADESH magnetic magnetite medium metamorphism migmatite million tonnes NW-SE occur ORISSA phyllite potential PRECAMBRIAN pyrite quartz quartzite Raniganj Raniganj Formation Regional exploration rocks Sakoli samples sand sandstone scale schist schist belt seabed seam zones sector sediments shale siltstone silty Singhbhum soil sq km Stratigraphy strike length sulphide surface surveys Talchir Formation tectonic thickness tion Toposheet trending tuff upto VALLEY COALFIELD varies volcanics zone