Records of the Geological Survey of India, Volume 109Geological Survey of India, 1974 - 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 19
... drilling in any potential area , we must be doubly sure of the chances of success in respect of correctly intercepting the interesting zone or deposit . In the preliminary stage , the drilling is undertaken at a greater interval ( say ...
... drilling in any potential area , we must be doubly sure of the chances of success in respect of correctly intercepting the interesting zone or deposit . In the preliminary stage , the drilling is undertaken at a greater interval ( say ...
Page 22
... drill hole points to the other in a row or column for the grade and thickness of the deposit . The rectan- gular grid pattern of drilling though very informative and provide reliable sub- surface data , as was found in Bela , Bankuiyan ...
... drill hole points to the other in a row or column for the grade and thickness of the deposit . The rectan- gular grid pattern of drilling though very informative and provide reliable sub- surface data , as was found in Bela , Bankuiyan ...
Page 23
... drilling of larger core - diameter , preferably by Nx or 66 mm bits or above when the core - size is large , there may be possibility of retention of good amount of core from soft , pulverized , or brittle formations , but it becomes ...
... drilling of larger core - diameter , preferably by Nx or 66 mm bits or above when the core - size is large , there may be possibility of retention of good amount of core from soft , pulverized , or brittle formations , but it becomes ...
Contents
An approach to Quaternary research with examples from Hungary | 5 |
Outline of methods of detailed exploration of bedded limestone | 14 |
Algal stromatolites in the Bhander Group of Formations | 38 |
Copyright | |
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algal amphibolite Andhra Pradesh assemblage axial plane B₁ bands Baraganda basin beds Bihar bindrabunensis borehole Bose calc-magnesian rocks Callialasporites carbonatite chlorite clays Collenia column contour core Cretaceous deformation deposit depth developed diamonds diopside district dolomite drilling Eocene facies flora folds fossils genus Geol Geological Survey Geologist Gondwana grade grains granite grey Guruvayur horizon indicate interbedded Intertrappean Jurassic Kemari kimberlites known laminae Lattavaram limestone Limestone member lineation lithologic Lower Madhya Pradesh Magardha Mahayuga mapping mesoscopic metamorphism mica mineralisation minerals Nagod observed occur Palaeobotanist pelitic Plate plunge pollen present pyrites quarry quartz quartz-mica-schist quartzite Quaternary Rajmahal hills rajmahalensis river sahnii samples sandstone Sanskrit schist schistosity sediments sequence shale shear Siddhanta siliceous slate species spores stratigraphic stromatolites structures Subarea Survey of India Suryasiddhanta talc Tamil Nadu Tanur thickness tremolite ultramafic Upper Gondwana Varahamihira vertical Wajrakarur water level zones