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 116
... quartz arenite and feldspathic quartz arenite with a number of pebble beds is ex- posed . The quartz arenites are coarse to medium grained , dominated with sub angular to subrounded quartz grains . The granitic rocks forming low lying ...
... quartz arenite and feldspathic quartz arenite with a number of pebble beds is ex- posed . The quartz arenites are coarse to medium grained , dominated with sub angular to subrounded quartz grains . The granitic rocks forming low lying ...
Page 142
... quartz - biotite - chlorite schist , quartz - chlorite - biotite schist , meta- ultramafites , gabbbro , quartzite , metabasalt ( massive , schistose , amygdaloidal ) and mylonitised quartz schist . The Chaibasa Formation consists of quartz ...
... quartz - biotite - chlorite schist , quartz - chlorite - biotite schist , meta- ultramafites , gabbbro , quartzite , metabasalt ( massive , schistose , amygdaloidal ) and mylonitised quartz schist . The Chaibasa Formation consists of quartz ...
Page 204
... quartz porphyry are intrusives into the amphibolite . Quartz veins are emplaced both into the meta - chert and amphibolite . In the Amdali - Gajpur section the basement granite is overlain unconformably by a thick sequence of meta ...
... quartz porphyry are intrusives into the amphibolite . Quartz veins are emplaced both into the meta - chert and amphibolite . In the Amdali - Gajpur section the basement granite is overlain unconformably by a thick sequence of meta ...
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