Records of the Geological Survey of India, Volume 112, Parts 3-5The Survey, 1982 - Earthquakes |
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Page 59
... basin shows a remarkable development . The formation exhibits a gradual decrease in thickness towards centre of the basin while the shale ratio increases progressively away from the basin periphery , thus suggesting a centripetal ...
... basin shows a remarkable development . The formation exhibits a gradual decrease in thickness towards centre of the basin while the shale ratio increases progressively away from the basin periphery , thus suggesting a centripetal ...
Page 61
... basin margin while ash percentage increases in re- verse way . Sand - shale ratio The gross lithology of the formation shows dominance of sand towards the basin periphery while the shale fraction increases towards the centre of the ...
... basin margin while ash percentage increases in re- verse way . Sand - shale ratio The gross lithology of the formation shows dominance of sand towards the basin periphery while the shale fraction increases towards the centre of the ...
Page 62
... basin except near Rohne , Saheda and Barkagaon areas where the sections are characterised mainly by cha- nnel filled units ( Plate - 6 ) . Near Brinda , in the northwestern part of the basin . the lower part of the formation is charac ...
... basin except near Rohne , Saheda and Barkagaon areas where the sections are characterised mainly by cha- nnel filled units ( Plate - 6 ) . Near Brinda , in the northwestern part of the basin . the lower part of the formation is charac ...
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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Common terms and phrases
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