Records of the Geological Survey of India, Volume 112, Parts 3-5The Survey, 1982 - Earthquakes |
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Page 13
... Series ' . The Group - II rocks unconformably overlie Group - I rocks and consist of conglomerates , quartzites , greywackes and shales with attendant intrusive and extrusive members . The Group - IIl rocks are faulted against Group ...
... Series ' . The Group - II rocks unconformably overlie Group - I rocks and consist of conglomerates , quartzites , greywackes and shales with attendant intrusive and extrusive members . The Group - IIl rocks are faulted against Group ...
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... series . Since the Mg rich members of the series contain nil or very little amount of ferrous iron , all iron reported as ferric iron oxide in the Chalk Hills amphibole may be considered to represent the total ferric iron content itself ...
... series . Since the Mg rich members of the series contain nil or very little amount of ferrous iron , all iron reported as ferric iron oxide in the Chalk Hills amphibole may be considered to represent the total ferric iron content itself ...
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... series . The isofalic point of calc - alkaline series of rocks indicates si 180 or more while for alkaline series si values rarely exceed 160 . = The above general observations of the Niggli Differentiation diagrams have their own ...
... series . The isofalic point of calc - alkaline series of rocks indicates si 180 or more while for alkaline series si values rarely exceed 160 . = The above general observations of the Niggli Differentiation diagrams have their own ...
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