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 2
... observed within the silicified , mylonitised and sericitised Shillong Group at Tyrsat - Mawphlang area in East Khasi Hills district , Meghalaya . The area shows incipient gossans . High resistivity and moderate SP anomalies observed at ...
... observed within the silicified , mylonitised and sericitised Shillong Group at Tyrsat - Mawphlang area in East Khasi Hills district , Meghalaya . The area shows incipient gossans . High resistivity and moderate SP anomalies observed at ...
Page 7
... observed around calcic plagioclase . Dolerite , consisted of plagioclase in the range of oligoclase and andesine variety , diopside and opaques with a sub - ophitic texture in between plagioclase and pyroxene . Coarse grained granite ...
... observed around calcic plagioclase . Dolerite , consisted of plagioclase in the range of oligoclase and andesine variety , diopside and opaques with a sub - ophitic texture in between plagioclase and pyroxene . Coarse grained granite ...
Page 79
... observed overfeldspathic quartzite close to the granite contact which may be favourable for gold occurences . Geophysical surveys employing shallow seismic refraction and electrical resistivity soundings were taken up in the Lait ...
... observed overfeldspathic quartzite close to the granite contact which may be favourable for gold occurences . Geophysical surveys employing shallow seismic refraction and electrical resistivity soundings were taken up in the Lait ...
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