Records of the Geological Survey of India, Volume 128, Parts 3-5Government of India, 1993 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 241
... volcanics . These volcanics include basaltic lava flows and thick sequence of pyroclasts , the latter showing proximal and distal facies assemblages . The proximal facies , occurring in the western and central parts , contains basic and ...
... volcanics . These volcanics include basaltic lava flows and thick sequence of pyroclasts , the latter showing proximal and distal facies assemblages . The proximal facies , occurring in the western and central parts , contains basic and ...
Page 41
... volcanics named informally as Riew Volcanics are basaltic to and isitic in composition . These comprise massive , vesicular and pyroclastic flows . The volcanics vary in colour from gray , drab green to purplish and are , generally ...
... volcanics named informally as Riew Volcanics are basaltic to and isitic in composition . These comprise massive , vesicular and pyroclastic flows . The volcanics vary in colour from gray , drab green to purplish and are , generally ...
Page 192
... volcanics , basic volcanics dominate the acid volcanics . The rocks are folded into NW - SE trending overturned synform plunging towards northwest with axial plane dipping steeply towards northeast . Mineralisation is indicated in the ...
... volcanics , basic volcanics dominate the acid volcanics . The rocks are folded into NW - SE trending overturned synform plunging towards northwest with axial plane dipping steeply towards northeast . Mineralisation is indicated in the ...
Contents
Coastal studies and Neotectonics | 5 |
Chhotonagpur Gneiss East | 12 |
Investigation for copper and associated mineralisation | 18 |
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Common terms and phrases
alignment amphibolite Andaman Andhra Pradesh apatite bands basemetal basin Bihar biotite block boreholes carbonatite charnockite chlorite clay conglomerate covered depth dips district dolerite drilling dykes Eastern excavation exposed fault field season fold foliation Formation fractures gabbro geochemical geological mapping geophysical GEOTECHNICAL INVESTIGATION gneiss gneissic gold mineralisation Gondwana grade grained granite granite gneiss granulite grey Group of rocks INDEX indicated intersected intrusives joints Karnataka kimberlite laterite limestone lineaments lithounits located magnetic magnetite migmatite mineral NE-SW NW-SE occur Orissa pegmatite phyllite power house Project proposed pyrite quartz quartz veins quartzite Quaternary regional reservoir river rock types samples sandstone scale schist schist belt schistose sedimentary shale shear zone Singhbhum slope soil spillway sq km STAGE GEOTECHNICAL INVESTIGATION stream sediment strike length structures sulphide Tamil Nadu thick tion toposheet traverse trench trending tunnel ultramafic upto valley volcanics West Bengal