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 iii
... reported from the Archaean Greenstone belt near Dhipasai ( 22 ° 32′30 " : 86 ° 15'00 " ) and Sonajhuri ( 22 ° 29′30 : 86 ° 09'10 " ) areas . Extensive quartz veins travers- ing the Greenstones hold promise for gold mineralisation . ii ...
... reported from the Archaean Greenstone belt near Dhipasai ( 22 ° 32′30 " : 86 ° 15'00 " ) and Sonajhuri ( 22 ° 29′30 : 86 ° 09'10 " ) areas . Extensive quartz veins travers- ing the Greenstones hold promise for gold mineralisation . ii ...
Page 118
... reported from Mahuadanr area which yielded a K / Ar age of 214 ± 5 , 217 ± 5 Ma indicating Late Triassic igneous activity . The purpose of the in- vestigation was to study the volcanic rocks , carbon- ate rocks and the mafic ...
... reported from Mahuadanr area which yielded a K / Ar age of 214 ± 5 , 217 ± 5 Ma indicating Late Triassic igneous activity . The purpose of the in- vestigation was to study the volcanic rocks , carbon- ate rocks and the mafic ...
Page 64
... REPORTED OCCURRENCE OF SMOKE AT VILLAGE MAWLONGKHAR , WEST KHASI HILLS DISTRICT , NONGSTOIN , MEGHALAYA T. S. Pangtey Project 5 ( Ops I , Engineering Geology , Shillong ) F. A NOTE ON PRELIMINARY GEOLOGICAL ASSESSMENT OF THE REPORTED.
... REPORTED OCCURRENCE OF SMOKE AT VILLAGE MAWLONGKHAR , WEST KHASI HILLS DISTRICT , NONGSTOIN , MEGHALAYA T. S. Pangtey Project 5 ( Ops I , Engineering Geology , Shillong ) F. A NOTE ON PRELIMINARY GEOLOGICAL ASSESSMENT OF THE REPORTED.
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