Records of the Geological Survey of India, Volume 108Geological Survey of India, 1977 - Earthquakes |
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Page 37
Iron Ore Series { Chaibasa Stage Unconformity Mica schists , quartz - sericite schist , sericite phyllite , carbonaceous phyllite , calcareous phyllite , quartzite , calc - granulite The pelitic schists and phyllites cover the major ...
Iron Ore Series { Chaibasa Stage Unconformity Mica schists , quartz - sericite schist , sericite phyllite , carbonaceous phyllite , calcareous phyllite , quartzite , calc - granulite The pelitic schists and phyllites cover the major ...
Page 49
... schists , which according to Rama Rao ( 1931 ) differ from the granitic gneisses and schists in being feldspar - free . The profusion of aplite and pegmatite veins in the granite gneisses , is also absent here . Bedding is almost ...
... schists , which according to Rama Rao ( 1931 ) differ from the granitic gneisses and schists in being feldspar - free . The profusion of aplite and pegmatite veins in the granite gneisses , is also absent here . Bedding is almost ...
Page 50
... schists . The schists are composed of quartz , plagioclase and mic mostly sericite , chlorite and biotite - with magnetite as a common accesso Occurring almost in the middle of the sequence is the Jaban conglomerate , whi is found as ...
... schists . The schists are composed of quartz , plagioclase and mic mostly sericite , chlorite and biotite - with magnetite as a common accesso Occurring almost in the middle of the sequence is the Jaban conglomerate , whi is found as ...
Contents
OF | 1 |
On the leadzinc mineralisation around Kushbani Purulia district | 36 |
Eocene ostracoda from Kolayatji area Rajasthan by V D Mamgain | 42 |
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Amboli Amilia Aravalli Bandal granite bands Barakar basalt flows beds belt biotite brachiopod brown carbonatite Champaner Chorhoti clay clinopyroxene coal seams coalfield collapse conglomerate cracks crinoid damage Deccan Basalt Deccan Traps deposits Dhauli diamonds district earthquake east epicentre exposed fault fauna felspar fibrolite folding formations fossils Gansser Geol Geological Survey Ghat gneisses grained granite granitisation grey Griesbach groundmass Haora river Himalayas horizon isoseismal Karewa Kashmir kimberlite kutcha kutcha-pucca lava limestone lower Mahabaleshwar Main sub-basin masonry metamorphic metres mica minerals Moher sub-basin Muth Quartzite Niti Pass nodules observed occur olivine Ordovician outcrops pahoehoe Permian phenocrysts phyllites plagioclase Plate porphyritic Pradesh present Purewa quartz quartzite river rocks samples sandstone schists sediments seen sequence shales shock Silurian Spiti storeyed stratigraphic structures Surv Survey of India tectonic thickness thin trend Triassic ultrabasic Upper upto valley vertical vesicles village zone