Records of the Geological Survey of India, Volume 122, Parts 2-4Geological Survey of India, 1989 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 90
... holes . Two significant lodes of copper mineralisation have been intersected in some of the bore holes . In Pavati , a total of 633.40 m of drilling involving 4 drill holes was carried out . No significant results have , however , been ...
... holes . Two significant lodes of copper mineralisation have been intersected in some of the bore holes . In Pavati , a total of 633.40 m of drilling involving 4 drill holes was carried out . No significant results have , however , been ...
Page 83
... holes did not show any core recovery till 15m of depth when rock is present in nearby areas on the surface . But in other holes fresh rock is encountered from 2m to 12m of depth and even at 0.80m . Nil recovery in some holes indicate ...
... holes did not show any core recovery till 15m of depth when rock is present in nearby areas on the surface . But in other holes fresh rock is encountered from 2m to 12m of depth and even at 0.80m . Nil recovery in some holes indicate ...
Page 50
... holes.A comparison of feasibility stage bore hole log data with these data indicates a probable deterioration of rock condition . ( iii ) Curtain grouting and permeability tests at cut - off - trench : The upstream and downstream rows ...
... holes.A comparison of feasibility stage bore hole log data with these data indicates a probable deterioration of rock condition . ( iii ) Curtain grouting and permeability tests at cut - off - trench : The upstream and downstream rows ...
Contents
CENTRAL HEADQUARTERS 179 | 1 |
AIRBORNE MINERAL SURVEY AND EXPLORATION WING 80104 | 80 |
COAL WING 105 174 | 105 |
Copyright | |
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amphibolite analysed anomaly anorthosite assemblage bands Barakar Barakar Formation basin bed rock belt Bhuban Bihar BIHAR Code biotite block boreholes Calcutta carbonatite carried clay coal seams Coal Wing COALFIELD Construction stage geotechnical cores covered dam axis deposits depth Disang district drilling dykes Eastern Engineering Geology evaluation fault Feasibility stage field season folds geochemical geological mapping Geology Division-II Ops geophysical geotechnical investigation gneiss Gondwana grade grained granite granite gneiss grey Group grouting horizon indicate irrigation limestone lineaments located magnetic metamorphic mica migmatites mineral mineralisation nala occur Orissa pegmatite phyllite PPB PPB PRADESH quartz quartzite Quaternary Raniganj Reservoir Scheme river rock types samples sand sandstone scale schist sediments shale shear zone Shillong siltstone Singhbhum slope Special Investigation spillway sq km stage geotechnical investigation structure surface Survey of India Talchir thickness toposheet traverses trending Upper upto valley varies veins volcanics West Bengal