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 82
... boreholes , in Mananpur area . The rock types encountered in boreholes comprise granite - gneiss , amphibolite , calc - silicate , tremolite - actinolite schist , quartzites , pegmatites and vein quartz . Mineralisation in the form of ...
... boreholes , in Mananpur area . The rock types encountered in boreholes comprise granite - gneiss , amphibolite , calc - silicate , tremolite - actinolite schist , quartzites , pegmatites and vein quartz . Mineralisation in the form of ...
Page 92
... boreholes . Several zones of copper mineralisation have been intersected in the boreholes out of which the copper percentage in significant zones vary from 0.36 % to 2.0 % . At Bhadalikhera , 519.60 m of drilling involving 3 boreholes ...
... boreholes . Several zones of copper mineralisation have been intersected in the boreholes out of which the copper percentage in significant zones vary from 0.36 % to 2.0 % . At Bhadalikhera , 519.60 m of drilling involving 3 boreholes ...
Page 45
... boreholes completed during the season , the manganese zone was intersected in four boreholes with thicnkess of ore zone varying from 0.20 m to 1.40 m . In Kadadih ( 21 ° 53 ' 30 " : 85 ° 14'30 " ) leasehold area is lateritised . The ...
... boreholes completed during the season , the manganese zone was intersected in four boreholes with thicnkess of ore zone varying from 0.20 m to 1.40 m . In Kadadih ( 21 ° 53 ' 30 " : 85 ° 14'30 " ) leasehold area is lateritised . The ...
Contents
CENTRAL HEADQUARTERS 179 | 1 |
AIRBORNE MINERAL SURVEY AND EXPLORATION WING 80104 | 80 |
COAL WING 105 174 | 105 |
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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