Records of the Geological Survey of India, Volume 112, Parts 3-5The Survey, 1982 - Earthquakes |
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Page 50
... minerals which have formed during the first phase of alteration of the parent rock are considered as primary low temperature minerals ( gibbsite etc ) for the resultant weathered rock . The growth of minerals from the residue left after ...
... minerals which have formed during the first phase of alteration of the parent rock are considered as primary low temperature minerals ( gibbsite etc ) for the resultant weathered rock . The growth of minerals from the residue left after ...
Page 51
... minerals in the saprolite zone , as deduced from the petrographically observed evidences , suggest , that all the Fe - and Al - bearing minerals ( felspar , sillimanite , garnet and micas ) alter to give hematite and / or kaolinite in ...
... minerals in the saprolite zone , as deduced from the petrographically observed evidences , suggest , that all the Fe - and Al - bearing minerals ( felspar , sillimanite , garnet and micas ) alter to give hematite and / or kaolinite in ...
Page
... minerals , modal composition of 16 samples of rocks , X - ray study of 15 samples of minerals and chemical analyses of 8 rock samples and 13 mineral samples . During the course of the study , a new mineral titanoclinohumite was reported ...
... minerals , modal composition of 16 samples of rocks , X - ray study of 15 samples of minerals and chemical analyses of 8 rock samples and 13 mineral samples . During the course of the study , a new mineral titanoclinohumite was reported ...
Contents
The evolution of the ArchaeanProterozoic Crust in parts of Bihar | 1 |
Some aspects of the geochemistry of Dhanjori Volcanics Singhbhum District | 7 |
Geology and Structure of Southern GangpurBonaigarh Region Sundargarh | 13 |
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Alluvium Arunachal Assam assemblage axial bands Barail barytes basaltic basin beds Bihar biotite borehole Chalk Hills chlorite clay coal coalfield conglomerate Cretaceous Cuddapah deposits depth Dhanjori diamictite Disang district dolerite drilling dykes Eocene epidiorite Eurydesma exposed facies faults fauna folds Formation fossil fractures Gangpur garnet Garo Hills Geol geological mapping Geological Survey gibbsite gneisses Gondwana grains granite Group hematite hornblende India indicate iron Jaintia Karharbari Kerala laterite limestone lode magnesite Mahadeo Meghalaya metamorphism metres mineralisation minerals Miocene occur olivine oxides peridotites phyllite plagioclase Plate Pradesh present pyrite pyroxene quartz quartzite Rajgir range recorded region rocks samples sand sandstone schist seam sedimentary sediments sequence shales shear zone shonkinite stratigraphic structural studies sulphide surface Surma Surv Survey of India Tertiary thickness Tipam traverse trend Tripura ultrabasic ultramafic Unconformity Unpublished GSI Report Upper upto uranium veins