Records of the Geological Survey of India, Volume 125, Part 2The Survey, 1990 - 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 83
... surface has been finally estimated . In the Dimala Khola block 30.45m was drilled in the last borehole in October , 1990. From surface and subsurface data , a conservative estimate of about 10,000 tonnes of coal ( within 20m depth ) was ...
... surface has been finally estimated . In the Dimala Khola block 30.45m was drilled in the last borehole in October , 1990. From surface and subsurface data , a conservative estimate of about 10,000 tonnes of coal ( within 20m depth ) was ...
Page 91
... surface chip samples were collected along eleven sample lines laid at an inter- val of 75 to 100m across the limestone zones . The analytical results of surface chip samples indicate that the southern zone has better quality lime- stone ...
... surface chip samples were collected along eleven sample lines laid at an inter- val of 75 to 100m across the limestone zones . The analytical results of surface chip samples indicate that the southern zone has better quality lime- stone ...
Page 280
... surface . Therefore in case of interpretational need the observed value of H ( x , y , o ) can be transformed to a set of observations on plane at a distance of ± η from earth's surface upwards or downwards using the relation ( b ) by ...
... surface . Therefore in case of interpretational need the observed value of H ( x , y , o ) can be transformed to a set of observations on plane at a distance of ± η from earth's surface upwards or downwards using the relation ( b ) by ...
Contents
Overview of the DirectorinCharge | 107 |
East Coast DivisionII | 117 |
West coast Division | 127 |
Copyright | |
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aeromagnetic amphibolite analysis Andhra Pradesh anomalies bands Barakar Barakar Formation Barren Measures Formation basemetal basin belt Bengal Bhutan BIHAR biotite block boreholes chalcopyrite charnockites clay coal seams COALFIELD coarse grained Code copper deposition depth range DISTRICT Division drilling dyke east eastern EXPLORATION FOR COAL fault felsic field season foraminifera geochemical GEOLOGICAL MAP geophysical gneisses 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