Records of the Geological Survey of India, Volume 109Geological Survey of India, 1977 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 17
... average thickness or the zones with encouraging results of the deposit / orebody can be developed . The arithmetic formula for weighted average grade = txa + t , xa , + ...... + tn xan t1 + t2 + ... + to 2 n = 1,2,3 , ......... etc ...
... average thickness or the zones with encouraging results of the deposit / orebody can be developed . The arithmetic formula for weighted average grade = txa + t , xa , + ...... + tn xan t1 + t2 + ... + to 2 n = 1,2,3 , ......... etc ...
Page 31
... average grade The computation of average grade in a trench line has been earlier discussed . For evaluation of average grade of a block from trench samples , there may be two alternatives , ( a ) where the trenches across the strike are ...
... average grade The computation of average grade in a trench line has been earlier discussed . For evaluation of average grade of a block from trench samples , there may be two alternatives , ( a ) where the trenches across the strike are ...
Page 32
... average assays of individual boreholes , with w1 , WWn corresponding widths and the distance between the borehole points are more or less equal , but when this distance varies , the average grade is calculated as follows : Average grade ...
... average assays of individual boreholes , with w1 , WWn corresponding widths and the distance between the borehole points are more or less equal , but when this distance varies , the average grade is calculated as follows : Average grade ...
Contents
PART | 1 |
An approach to Quaternary research with examples from Hungary | 11 |
Outline of methods of detailed exploration of bedded limestone | 14 |
6 other sections not shown
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Common terms and phrases
algal amphibolite Andhra Pradesh assemblage axial plane B₁ bands Baraganda basin beds Bihar bindrabunensis borehole Bose breccia calc-magnesian rocks Callialasporites carbonatite chlorite clays Collenia column columnar contour core Cretaceous deformation deposit depth diamonds diopside district dolomite drilling Eocene facies flora folds fossils genus Geol Geological Survey Geologist Gondwana grade grains granite grey Hazaribagh horizon indicate interbedded Intertrappean Jour Jurassic kimberlites known laminae Lattavaram limestone lineation lithologic Lower Madhya Pradesh Magardha Mahayuga mapping mesoscopic metamorphism mineralisation minerals Nagod observed occur Oncolite Palaeobotanist parallel pelitic Plate plunge pollen potential area present pyrites 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 talc Tamil Nadu thickness thinly tremolite ultramafic Unpublished GSI report Varahamihira Wajrakarur water level zones