Records of the Geological Survey of India, Volume 123, Parts 3-4Government of India, 1990 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page xx
... pegmatite . In Charkapathal , five boreholes out of six have encountered mica pegmatite bodies . The norms for exploration of mica deciphered in course of integrated survey in Saphi - Sethwa block appears to have worked well in locating ...
... pegmatite . In Charkapathal , five boreholes out of six have encountered mica pegmatite bodies . The norms for exploration of mica deciphered in course of integrated survey in Saphi - Sethwa block appears to have worked well in locating ...
Page 52
... pegmatites are pro- fuse along the southern part of the mapped area . Three sub - parallel mica pegmatite bodies are recorded . The mical pegmatite veins vary in width from 50 cm to more than 5 m and in strike extension from few ...
... pegmatites are pro- fuse along the southern part of the mapped area . Three sub - parallel mica pegmatite bodies are recorded . The mical pegmatite veins vary in width from 50 cm to more than 5 m and in strike extension from few ...
Page 53
... pegmatite zones , one of these is 6.5 m thick . Borehole No. CRB - 4 has encountered eight pegmatite zones out of which three are more than one metre thick . In Borehole No. CRB - 6 one mica - pegmatite body has been encountered . A ...
... pegmatite zones , one of these is 6.5 m thick . Borehole No. CRB - 4 has encountered eight pegmatite zones out of which three are more than one metre thick . In Borehole No. CRB - 6 one mica - pegmatite body has been encountered . A ...
Contents
CONTENTS | 1 |
Quaternary geological and geomorphological mapping of the ChandanBadua | 7 |
Quaternary geological mapping in KosiGandak interfluve tract North Bihar | 13 |
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alignment amphibolite anomaly anorthosite bands basin bed rock belt BIHAR BIHAR Code biotite block boreholes chromite clay CONSTRUCTION STAGE GEOTECHNICAL covered cut-off dam axis deposits depth Disang district drilling earth dam Engineering Geology Engineering Geology Division-IV excavation exposed EXTENDED ABSTRACTS field season folds foliation Formation foundation geochemical geological mapping Geology Division-II Ops geomorphological geophysical Geotechnical and Special GEOTECHNICAL INVESTIGATION gneiss gneissic Gondwana grained granite granite gneiss granitoid graphite grey grouting GSI Vol hill indicate irrigation khondalite lineaments located Meghalaya migmatites mineralisation minerals nala occur ORISSA ORISSA Code pegmatite phyllite plagioclase power house proposed Purulia Purulia district quartz veins quartzite Quaternary Regional Geology Division right bank samples sandstone scale schist sediments shale shear zone Shillong siltstone Singhbhum slope soil Special Investigation spillway sq km STAGE GEOTECHNICAL INVESTIGATION structure surface SURVEY OF INDIA thick toposheet traverse trending tunnel upto volcanic weathered West Bengal