Records of the Geological Survey of India, Volume 121, Part 1
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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IIL COAL WING
AIRBORNE MINERAL SURVEYS EXPLORATION WING
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aeromagnetic alignment alluvium analysis Andhra Pradesh anomaly arca assess associated Asstt bands basalt basemetal basin Bihar biotite block boreholes carricq carried chalcopyrite charnockite chemical clay coal seams coalfield comprising covering an area Deccan Trap deposits depth detailed district DIVISION Director dykes exploration exposed Formation fossils geological investigations geological mapping Geologist Jr GEOLOGY DIVISION geophysical surveys Geophysicist geotechnical investigation Ghosh gneiss Gondwana gravity ground evaluation Hydel India indicated investigation was taken Karnataka km was covered Kumar laboratory limestone located logging Madhya Pradesh magnetic magnetite Meghalaya migmatites million tonnes mineral occur Orissa pegmatite phyllite power house programme proposed quartz quartzite Quaternary Rajasthan REGIONAL GEOLOGY river rock types S/Shri samples were collected sandstone schist schist belt sediments shale Shri Singh Siwalik spillway sq km strike length structure studies sulphide mineralisation surface thickness toposheet traverse trending tunnel upto Uttar Pradesh volcanics