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 185
... stream- ing of CO , and dehydration of gneisses ) responsible for producing such features and also to date these events . Other lithotypes occurring in minor propor- tion in this zone include quartzite , metapelites ( gt + sill + qtz + ...
... stream- ing of CO , and dehydration of gneisses ) responsible for producing such features and also to date these events . Other lithotypes occurring in minor propor- tion in this zone include quartzite , metapelites ( gt + sill + qtz + ...
Page 210
... Stream sediments were collected from lower order streams . Minerals like pyrope - garnet , magnesian ilmenite , magnesian chromite and chrome diposide serve as suitable indi- cator minerals which owe their origin drainage sites close to ...
... Stream sediments were collected from lower order streams . Minerals like pyrope - garnet , magnesian ilmenite , magnesian chromite and chrome diposide serve as suitable indi- cator minerals which owe their origin drainage sites close to ...
Page 6
... stream sediment samples out of 94 were analysed for gold and basemetals respectively . In the stream sediments Cu value range from 10 to 100 ppm , but at places 2 to 3 fold increase in values over a distance of few kilometer may be ...
... stream sediment samples out of 94 were analysed for gold and basemetals respectively . In the stream sediments Cu value range from 10 to 100 ppm , but at places 2 to 3 fold increase in values over a distance of few kilometer may be ...
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