Records of the Geological Survey of India, Volume 108, Part 2The Survey, 1977 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 159
... diamonds is kimberlite , though it has been found in other ultrabasic and basic rocks and wall rocks of the pipes . However , all kimberlites are not diamondiferous . Diamonds are formed in the mantle at depths varying between 80 to 200 ...
... diamonds is kimberlite , though it has been found in other ultrabasic and basic rocks and wall rocks of the pipes . However , all kimberlites are not diamondiferous . Diamonds are formed in the mantle at depths varying between 80 to 200 ...
Page 160
... diamonds are supposed to have been discovered were located mostly in the gravels of the Kistna river . The only primary source of economic importance is the Majhgawan pipes , intrusive into the Kaimur sandstones , near Panna ( Mathur ...
... diamonds are supposed to have been discovered were located mostly in the gravels of the Kistna river . The only primary source of economic importance is the Majhgawan pipes , intrusive into the Kaimur sandstones , near Panna ( Mathur ...
Page 164
... diamonds . Though diamond is generally found in pipes , it has also been recorded from dykes and other forms of intrusions . In view of the above , the ultrabasics of Rajasthan , Gujarat , Mysore , Madras , Bihar and Orissa assume ...
... diamonds . Though diamond is generally found in pipes , it has also been recorded from dykes and other forms of intrusions . In view of the above , the ultrabasics of Rajasthan , Gujarat , Mysore , Madras , Bihar and Orissa assume ...
Contents
OF | 1 |
On the leadzinc mineralisation around Kushbani Purulia district | 36 |
Eocene ostracoda from Kolayatji area Rajasthan by V D Mamgain | 42 |
Copyright | |
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Amboli Amilia Aravalli Bandal granite bands Barakar basalt flows belt biotite brachiopod brown carbonatite Champaner chloritic Chorhoti clay clinopyroxene coal seams coalfield collapse conglomerate cracks crinoid Deccan Basalt Deccan Traps deposits Dhauli diamonds district earthquake epicentre exposed fault fauna felspar fibrolite folding formations fossils Gansser Geol Geological Survey Ghat Section gneisses grained granite granitisation greenish grey groundmass Haora river HIGHLY PORPHYRITIC Himalayas horizon isoseismal Karewa Kashmir kimberlite kutcha kutcha-pucca lava limestone lower Mahabaleshwar Main sub-basin metamorphism metres minerals Moher sub-basin Muth Quartzite Niti Pass nodules occur olivine Ordovician outcrops pahoehoe Permian phenocrysts phyllites plagioclase Plate PORPHYRITIC Pradesh Purewa quartz quartzite RED BOLE BED river rocks sandstone schists sediments seen sequence shales shock Spiti storeyed stratigraphic structures Survey of India tectonic thickness thin trend Triassic ultrabasic Upper upto valley vertical vesicles vesicular village ZEOLITIC zone