Records of the Geological Survey of India, Volume 112, Part 3government of India., 1982 - Geology 1867- includes the "Annual report of the Geological survey of India". |
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Page 50
... gibbsite is noted upto an average depth of 50 m or more along the scarps and slopes . The profile revealed by the exploratory boreholes and the scarp sections is given in Table I. The saprolite zone ( unit II ) has been petrographicaly ...
... gibbsite is noted upto an average depth of 50 m or more along the scarps and slopes . The profile revealed by the exploratory boreholes and the scarp sections is given in Table I. The saprolite zone ( unit II ) has been petrographicaly ...
Page 51
... gibbsite is also present . The latter's relatively greater abundance in this zone in comparison to the zone of pseudomorphism ( Pl . I ) is perhaps the effect of progressive removal of kaolinite and Fe - minerals from the system and ...
... gibbsite is also present . The latter's relatively greater abundance in this zone in comparison to the zone of pseudomorphism ( Pl . I ) is perhaps the effect of progressive removal of kaolinite and Fe - minerals from the system and ...
Page 53
... gibbsite ( white ) , ( zone of pseudo- morphism ) . ( X60 ; crossed nicol ) : Relict muscovite grain altering to microcrystalline gibbsite ( zone of pseudomorphism ) . ( X60 ; crossed nicol ) : Pseudomorph after felspar , replaced ...
... gibbsite ( white ) , ( zone of pseudo- morphism ) . ( X60 ; crossed nicol ) : Relict muscovite grain altering to microcrystalline gibbsite ( zone of pseudomorphism ) . ( X60 ; crossed nicol ) : Pseudomorph after felspar , replaced ...
Contents
OF | 1 |
Some aspects of the geochemistry of Dhanjori Volcanics Singhbhum District | 7 |
Geology and Structure of Southern Gangpur Bonaigarh Region Sundargarh | 13 |
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analysis andradite anomaly average axial plane Badampahar bands basaltic basin bauxite beds Bihar biotite calc-gneiss chalcopyrite channel chlorite cleavage Coalfield conglomerate deformation deposits Dhanbad district Dhanjori epidiorite district dolerite dykes eastern ENE-WSW epidiorite epidote F₁ facies fold fossils fractures Gangpur Gangpur Group garnet-rock Geol GEOLOGICAL SURVEY Geophysical gibbsite gneiss Godhur grains granite gneiss gravity Group-I Group-II rocks Group-III Hazaribagh Hazaribagh district hornblende host rock INDIA Records indicated kaolinite Karharbari Formation Keonjhar Khola Kusunda laterite lavas limb massive garnet metamorphic metavolcanic metres mica schists mineralisation minerals muscovite Nausahi North Karanpura occur Orissa pegmatite phyllite plagioclase Plate plunging quartz quartzite Rajgir Rangpo Region resistivity samples sandstone saprolite Sarkar scale schist schistose sedimentary sediments sequence sericite shales shear shows Singhbhum skarn southern stowed structures sulphide Surv SURVEY OF INDIA syncline synformal textural thickness traverse trend ultrabasic rock unstowed vein quartz volcanics