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 217
... occur bordering the beach sur- face and attain a height of 5-10m . This zone having a width varying from 500 to 1200 m presents a highly undulating topography . The dunes consist of fine to medium graind unoxidised white to yellowish ...
... occur bordering the beach sur- face and attain a height of 5-10m . This zone having a width varying from 500 to 1200 m presents a highly undulating topography . The dunes consist of fine to medium graind unoxidised white to yellowish ...
Page 22
... occur on the north and west in the low lying lands at the base of the hills . The Burapahar ridge extends towards west upto Sekoni . The northern boundary of the area is marked by Brahmaputra river . The ridges show thick soil covers ...
... occur on the north and west in the low lying lands at the base of the hills . The Burapahar ridge extends towards west upto Sekoni . The northern boundary of the area is marked by Brahmaputra river . The ridges show thick soil covers ...
Page 70
... occurs with orthoclase as subordinate minerals . Nepheline , alkali amphibole ( kersutite ) , biotite and olivine occur as minor constituents . Apatite and rutile occur as accesso- ries . The rock shows hypidiomorphic granular texture ...
... occurs with orthoclase as subordinate minerals . Nepheline , alkali amphibole ( kersutite ) , biotite and olivine occur as minor constituents . Apatite and rutile occur as accesso- ries . The rock shows hypidiomorphic granular texture ...
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