Records of the Geological Survey of India, Volume 99Geological Survey of India, 1972 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 69
... noticed within this formation . The rocks . are intruded by sills of lamprophyre and quartz vein which have also under- gone deformation . Some quartz veins belonging to the post - tectonic period are now intact and have cut across the ...
... noticed within this formation . The rocks . are intruded by sills of lamprophyre and quartz vein which have also under- gone deformation . Some quartz veins belonging to the post - tectonic period are now intact and have cut across the ...
Page 70
... noticed in some rock sections under the microscope . This zone is however not persistent and cannot be traced all along . Slate These form the lowest horizon of the Daling series . These are greenish to grey coloured , exhibiting a ...
... noticed in some rock sections under the microscope . This zone is however not persistent and cannot be traced all along . Slate These form the lowest horizon of the Daling series . These are greenish to grey coloured , exhibiting a ...
Page 71
... noticed . Further upwards , development of sillimanite is noticed , though the other constituents remain the same . Garnet is not always pres- ent in these rocks , but when present , it is in the form of larger crystals than those ...
... noticed . Further upwards , development of sillimanite is noticed , though the other constituents remain the same . Garnet is not always pres- ent in these rocks , but when present , it is in the form of larger crystals than those ...
Contents
VOLUME 99 PART | 2 |
Observations on the Siwalik System of India | 17 |
Microflora of the Nari Series of Kutch | 27 |
Copyright | |
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Common terms and phrases
Andaman assemblage bands Barren Measures basin beds biotite boulder carbonaceous cells Chinji chlorite coal seams coarse Collenia colour Conophyton Daling series Damuda Darjeeling Darjeeling gneiss deposition developed Dhokpathan dips dolerite Eocene epidote facies faults fauna felspar ferruginous folds foliation foraminifera formation forms fossil G.S.I. Type garnet Geol Geological Survey Ghanpur area Giridih glacier gneisses Gondwana grained granites greenish grey groundwater Hipparion horizon indicate Jour Kaphni lamination lamprophyres lenses limestone lithological Lower Makrera metamorphism mica-schist microns migmatites mineral Miocene moraine Nagri occur olivine outlier overlying Panchet pebbly peridotite perithallus Pinjor plagioclase planes Plate Pliocene pollen quartz quartzites Raniganj Raniganj coalfield recorded reservoir rocks saline samples sandstone Sastry schist sections sediments sequence shales siltstone Siwalik system species specimens stage stratigraphic stromatolites structure Surv Survey of India Talchir Tappan Tatrot tectonic thick thrust tourmaline upto Uttattur group valley veins vitrinites zone