Records of the Geological Survey of India, Volume 121, Part 1The 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 71
... thickness varying from 4.31m to 27.45m within the depth range of 33.50m and 235.86m In addition to the above seams , Kushmunda upper and lower scams of 34.50m and 41.00m thickness ( partial thickness ) respectively encountered between ...
... thickness varying from 4.31m to 27.45m within the depth range of 33.50m and 235.86m In addition to the above seams , Kushmunda upper and lower scams of 34.50m and 41.00m thickness ( partial thickness ) respectively encountered between ...
Page 72
... thickness of 2.05m shows ash content as low as 9.1 % . In this borehole , the seam No. II records a thickness of 6.25m of which , the bottom section of 4.42m shows ash content of 16.6 % ( on air - dried basis ) . These three seams are ...
... thickness of 2.05m shows ash content as low as 9.1 % . In this borehole , the seam No. II records a thickness of 6.25m of which , the bottom section of 4.42m shows ash content of 16.6 % ( on air - dried basis ) . These three seams are ...
Page 74
... thickness of 0.25m to 0.80m As a result , this part does not hold much promise from the economic point of view . In Lakhpat area , two boreholes ( GLK - 18 & 19 ) have indicated three lignite seams with thickness varying from 0.79m to ...
... thickness of 0.25m to 0.80m As a result , this part does not hold much promise from the economic point of view . In Lakhpat area , two boreholes ( GLK - 18 & 19 ) have indicated three lignite seams with thickness varying from 0.79m to ...
Contents
INTRODUCTION | 1 |
AIRBORNE MINERAL SURVEYS EXPLORATION WING | 44 |
OPERATION BIHAR | 135 |
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alignment analysis Andhra Pradesh anomaly arca assess Asstt bands basalt basin Bihar biotite block boreholes carried chalcopyrite charnockite chemical clay coal coalfield comprising Construction stage covering an area Deccan Trap delineated deposits depth district DIVISION Director DIVISION-I Divn drill cores dykes Economic Geology evaluation exploration exposed field season Formation fossils geochemical geological investigations geological mapping Geologist Jr GEOLOGY DIVISION geomorphological geophysical surveys Geophysicist geotechnical investigation Ghosh gneiss Gondwana granite granite gneiss Group indicated investigation was taken Karnataka km was covered Kumar laboratory limestone located logging magnetic Maharashtra migmatites mineral mineralisation occur Orissa pegmatite Petrology phyllite power house programme proposed quartz quartzite Quaternary Rajasthan Regional Geology river rock types S/Shri samples were collected sandstone scale schist schist belt seams sediments sequence shale Shri Singh Siwalik spillway sq km Srivastava strike length studies suggested sulphide surface thickness toposheet trending tunnel upto Uttar Pradesh