Records of the Geological Survey of India, Volume 132, Part 5The Survey, 1997 - 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 10
... followed by the emplacement of megacrystic charnockite during 1000 Ma event . These events are followed by anothe potassic granite emplacement , as at Nandigudem relatable to 700-500 Ma ( D ) event , resulting in N - S broac open folds ...
... followed by the emplacement of megacrystic charnockite during 1000 Ma event . These events are followed by anothe potassic granite emplacement , as at Nandigudem relatable to 700-500 Ma ( D ) event , resulting in N - S broac open folds ...
Page 14
... followed by limited field checks . Part of this area , ( Plate - 2 ) amounting to 450 sq km was covered by thematic mapping on 1 : 25,000 scale . A total of 105 rock samples were collected , 75 samples for petrological and 30 for ...
... followed by limited field checks . Part of this area , ( Plate - 2 ) amounting to 450 sq km was covered by thematic mapping on 1 : 25,000 scale . A total of 105 rock samples were collected , 75 samples for petrological and 30 for ...
Page 104
... followed downward by siliceous ore , which is in turn underlain by powdery ore . The average grade is below 58 % FeO , which is enriched to 64 % FeO by washing and blending if necessary with high grade ore . The ore reserve data will be ...
... followed downward by siliceous ore , which is in turn underlain by powdery ore . The average grade is below 58 % FeO , which is enriched to 64 % FeO by washing and blending if necessary with high grade ore . The ore reserve data will be ...
Contents
Project JonnagiriKadiriGadwal Schist Belts | 21 |
Ramagiri Schist Belt | 27 |
Project Diamond | 34 |
Copyright | |
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acid volcanics amphibolite ANDHRA PRADESH argillites assessment auriferous bands basin biotite block boreholes carried chargeability charnockite charnockite gneiss Chitradurga clay construction Cuddapah delineated depth Dharmapuri district dimension stone dolerite downstream drilled earth dam east emplaced ENE-WSW excavated exposed faults field season folds foliation Formation foundation fractures geochemical GEOLOGICAL MAP geophysical gneiss Gneissic gold mineralisation grained granite granite gneiss granulite grey grouting hornblende indicated intersected intrusive joints KARNATAKA KERALA kimberlite laterite limestone lineament located lode mafic magnetic major migmatitic minerals NE-SW NNW-SSE NW-SE occurs pegmatite pegmatite veins phyllite pink Plate-1 potential power house pyroxene pyroxene granulite quartz quartz veins quartzite regional Reservoir Project River rock types samples scale schist belt sediments seepage shaft shear zone slope soil southern spillway sq km strike length structural studies sulphides surveys Tamil Nadu tectonic terrain thick traverses trench trending tunnel upto vertical weathered