Records of the Geological Survey of India, Volume 129, Parts 3-4Government of India, 1994 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 28
... range of 42.0 m to 64.0 m below ground surface . The general strike trends E - W to NE - SW and dip at low angles towards south . The area is traversed by about 15 major or minor faults . Geomorphologically , the area under study ...
... range of 42.0 m to 64.0 m below ground surface . The general strike trends E - W to NE - SW and dip at low angles towards south . The area is traversed by about 15 major or minor faults . Geomorphologically , the area under study ...
Page 25
... range between 10 ppm and 50 ppm and out of 22 analyses , 9 show less than 10 ppm . Lead : The lead values range between 50 ppm and 100 ppm , while thirteen analyses show 50 ppm . Zinc : The zinc values range between 20 and 170 ppm ...
... range between 10 ppm and 50 ppm and out of 22 analyses , 9 show less than 10 ppm . Lead : The lead values range between 50 ppm and 100 ppm , while thirteen analyses show 50 ppm . Zinc : The zinc values range between 20 and 170 ppm ...
Page 82
... range of 3-20 metres . A total of 103 seismic refraction profiles were taken in the area at a grid of 250 meters ( Fig . 25 ) . The seismic refraction survey revealed in general 2 to 3 layers , comprising topsoil , boulders and hard ...
... range of 3-20 metres . A total of 103 seismic refraction profiles were taken in the area at a grid of 250 meters ( Fig . 25 ) . The seismic refraction survey revealed in general 2 to 3 layers , comprising topsoil , boulders and hard ...
Contents
WEST BENGAL SIKKIM A N ISLANDS | 1 |
Report of investigation for rare metal mineralisation within pegmatite | 7 |
Gold | 14 |
Copyright | |
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acid volcanics amphibolite Andaman anomaly Arunachal Pradesh Assam bands basemetal basin bed rock belt Bihar biotite block boreholes Chhotanagpur clay Code colour comprising conglomerate covered depth Division drilling dykes east eastern Engineering Geology erosion exploration exposed fault feldspar field season fold foliation Formation geochemical GEOLOGICAL MAP geophysical GEOTECHNICAL INVESTIGATION gneiss gneissic gold Gondwana grade granite granite gneiss granitoids grey Group of rocks GSI Rec Hills district identified intrusives Karbi Anglong laterite limestone lineament lithological located medium grained Meghalaya mica schist migmatites mineralisation minerals nala occurs Orissa OVERVIEW pegmatite phyllite plagioclase Proterozoic Purulia district quartz quartz veins quartzite Quaternary Region river sand sandstone scale schist sector sequence shale Shillong Shillong Group Sikkim siltstone Singhbhum slope soil spillway sq km STAGE GEOTECHNICAL INVESTIGATION stream sediment samples structure sulphide Surface SURVEY OF INDIA terrain thick Toposheet trending ultramafic upto West Bengal western