Records of the Geological Survey of India, Volume 125, Parts 3-5Government of India, 1990 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 74
... phase of meta - gabbro / amphibolite followed by a younger basic / ultrabasic phase , were recorded after the formation of basic granulites . The rocks of the arca have been pervasively migmatised by three phases of granitic activity ...
... phase of meta - gabbro / amphibolite followed by a younger basic / ultrabasic phase , were recorded after the formation of basic granulites . The rocks of the arca have been pervasively migmatised by three phases of granitic activity ...
Page 85
... phase . Folds of the second phase are invariably associated with an axial planar crenu- lation cleavage which has a trend ( with comparatively steeper dip ) similar to that of the first phase planar fabric . The Barren Island volcano in ...
... phase . Folds of the second phase are invariably associated with an axial planar crenu- lation cleavage which has a trend ( with comparatively steeper dip ) similar to that of the first phase planar fabric . The Barren Island volcano in ...
Page 94
... phase of eruption started early this year . The present work deals with the first and second phases of the volcanic activity . Petrography Lavas of the first phase are essentially olivine basalt with phenocrysts of zoned plagioclase ...
... phase of eruption started early this year . The present work deals with the first and second phases of the volcanic activity . Petrography Lavas of the first phase are essentially olivine basalt with phenocrysts of zoned plagioclase ...
Contents
Studies of granites of Hazaribagh Gaya and Palamau districts Bihar | 7 |
Geological mapping around PindaraBiharbariBaghmari area Bhagalpur district Bihar | 13 |
FIELD SEASON 199091 | 91 |
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Common terms and phrases
alignment amphibolite ANDHRA PRADESH anomaly bands basemetal basin Bihar biotite block boreholes charnockite chromite clay comprises CONSTRUCTION STAGE GEOTECHNICAL deposits depth DISTRICT dolerite drilled dykes earth dam east eastern Engineering Geology Engineering Geology Division excavation exposed field season folds foliation Formation geochemical GEOLOGICAL MAP geophysical Geotechnical and Special GEOTECHNICAL INVESTIGATION gneiss gold grained granite granite gneiss granitoid granulite grey Group grouting hill holes hornblende indicated irrigation joints KARNATAKA khondalite kimberlite laterite limestone located magnetite Meghalaya migmatite mineral mineralised zone nala occur Orissa pegmatite phyllite pink granite plagioclase power house proposed pyrite pyroxenite quartz quartz veins quartzite Quaternary Regional Geology reservoir river rock types samples sandstone scale schist schist belt schistose sediments shale shear zone Shillong Singhbhum slope soil Special Investigation spillway sq km stage geotechnical investigation strike length structure sulphide surveys syenite thick traverses trending tunnel upto volcanics West Bengal