Records of the Geological Survey of India, Volume 112, Parts 3-5The Survey, 1982 - Earthquakes |
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Page 75
... dykes traverse in the layered anorthositic complex of Bankura district of West Bengal . Genetically , unrelated to the layered complex , these dykes are of post - Gondwana age and from its petrological and chemical composition appear to ...
... dykes traverse in the layered anorthositic complex of Bankura district of West Bengal . Genetically , unrelated to the layered complex , these dykes are of post - Gondwana age and from its petrological and chemical composition appear to ...
Page 77
... dykes have intruded . Chemical composition suggests that the dolerite is derived from plateau basalts of tholeiite type . Geographically these dykes are not very far away from the extensive Rajmahal traps situated north of the dykes ...
... dykes have intruded . Chemical composition suggests that the dolerite is derived from plateau basalts of tholeiite type . Geographically these dykes are not very far away from the extensive Rajmahal traps situated north of the dykes ...
Page
... dykes Three dykes of this type are met with in this area . These are of small dimensions and about a metre or less in width and traceable for a few metres . They are characterised by vitrophyric and hyalopilitic textures , the ...
... dykes Three dykes of this type are met with in this area . These are of small dimensions and about a metre or less in width and traceable for a few metres . They are characterised by vitrophyric and hyalopilitic textures , the ...
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