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 10
... quartz are found in increasing order of abundance in the rock types exposed in the Ghanpur area . In addition to these , veins of aplite and pegmatite have also been recorded in the gneisses mapped . The veins of quartz are noticed in ...
... quartz are found in increasing order of abundance in the rock types exposed in the Ghanpur area . In addition to these , veins of aplite and pegmatite have also been recorded in the gneisses mapped . The veins of quartz are noticed in ...
Page 70
... quartz are noticed . Chlorite - sericite - schist : The transition from slates to chlorite- sericite - schist is gradual . The rocks are very much crinkled . Under the microscope , these show criss - cross chlorite and sericite with quartz ...
... quartz are noticed . Chlorite - sericite - schist : The transition from slates to chlorite- sericite - schist is gradual . The rocks are very much crinkled . Under the microscope , these show criss - cross chlorite and sericite with quartz ...
Page 71
... quartz . Orthoclase , albite and microcline are also present in small quantities . Quartz shows undulose extinction . Apatite and iron - ore occur as accessory minerals . Carbonaceous mica - schist : Though this formation indicates the ...
... quartz . Orthoclase , albite and microcline are also present in small quantities . Quartz shows undulose extinction . Apatite and iron - ore occur as accessory minerals . Carbonaceous mica - schist : Though this formation indicates the ...
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