Records of the Geological Survey of India, Volume 114Geological Survey of India, 1986 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 92
... tunnel is to pass through . The underground structures , like the surge sha't , penstocks etc. , are located in hard biotite gneiss . The exploration , by the drifts and bore holes , from the surface indicate presence of shear zones of ...
... tunnel is to pass through . The underground structures , like the surge sha't , penstocks etc. , are located in hard biotite gneiss . The exploration , by the drifts and bore holes , from the surface indicate presence of shear zones of ...
Page 93
... tunnels are to be driven throuth this stretch . The central tunnel has already been completed . The excavation for - two side tunnels are in progress . Andotra logged 785.7 m of eastern and western tunnels from two headings , namely ...
... tunnels are to be driven throuth this stretch . The central tunnel has already been completed . The excavation for - two side tunnels are in progress . Andotra logged 785.7 m of eastern and western tunnels from two headings , namely ...
Page 96
... tunnel which has been struck up at RD 3049 m has been tackled successfully and the tunnel excavation progressed satisfactorily . They further report that the drainage gallery around the surge shaft was excavated upto RD 156 m through ...
... tunnel which has been struck up at RD 3049 m has been tackled successfully and the tunnel excavation progressed satisfactorily . They further report that the drainage gallery around the surge shaft was excavated upto RD 156 m through ...
Contents
DRILLING DIVISION | 5 |
MAHARASHTRA CIRCLE EAST | 10 |
PUBLICATION INFORMATION DIVISION | 23 |
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Common terms and phrases
alignment amphibolite analysed Andhra Pradesh anomaly bands basin bed rock belt Bihar biotite block boreholes carried chalcopyrite charnockite clay coalfield comprising core covering an area depth dips Director DISTRICT Division dolomite drill holes dykes excavation exploration exposed fault folds foliation Formation geochemical geological investigation geological mapping geotechnical investigation glacier gneiss Gondwana granite gneiss granitoid grey Group Headquarters Hydel Project indicated intrusive Jammu Karnataka km long Laboratory Ladakh laterite limestone line km lineaments located logging magnetic magnetite mapped an area mica migmatites mineralisation minerals nala occur Orissa pegmatite phyllite pits power house proposed pyrite quartz quartz veins quartzite Rajasthan regional river rock types samples were collected sandstone scale schist seams sector sediments shale shear zone Shri siltstone slate spillway sq km sq km area strike length studies sulphide Survey of India thickness tion tonnes toposheet trending tunnel upto valley varying volcanics