Records of the Geological Survey of India, Volume 108Geological Survey of India, 1977 - Earthquakes |
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Page 77
... minerals . Many samples contain diktytaxitic cavities filled with clay minerals , which were probably formed during the last stage of solidification of the lavas or even after that and are not considered to be due to alteration of ...
... minerals . Many samples contain diktytaxitic cavities filled with clay minerals , which were probably formed during the last stage of solidification of the lavas or even after that and are not considered to be due to alteration of ...
Page 84
... minerals . Further unidentified tiny slender needles and crystallites which are often associated with the microlites of plagioclase , granules of pyroxene and needles of apatite , are also noticed at places . Glass is generally ...
... minerals . Further unidentified tiny slender needles and crystallites which are often associated with the microlites of plagioclase , granules of pyroxene and needles of apatite , are also noticed at places . Glass is generally ...
Page 144
... minerals . Hornblende and biotite are found as subordinate consti- tuents . Apatite , zircon , sphene , rutile , magnetite and ilmenite occur as accessory minerals , whereas epidote , hematite and leucoxene are noted as secondary minerals ...
... minerals . Hornblende and biotite are found as subordinate consti- tuents . Apatite , zircon , sphene , rutile , magnetite and ilmenite occur as accessory minerals , whereas epidote , hematite and leucoxene are noted as secondary minerals ...
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