Records of the Geological Survey of India, Volume 129, Part 5Government of India, 1994 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 53
... values between 100 and 350 ppb . In Mallapur block , 20 samples in a 250-500 m wide zone showed Au range of 100-430 ppb . The gold values were also found to show fairly good correlation with those of copper and moderate correlation with ...
... values between 100 and 350 ppb . In Mallapur block , 20 samples in a 250-500 m wide zone showed Au range of 100-430 ppb . The gold values were also found to show fairly good correlation with those of copper and moderate correlation with ...
Page 80
... values obtained are encouraging . The three bands have strike lengths varying from 150-500 m with surface assay values from 0.1 to 7.18g / t and trench assay values from 0.1 to 14 g / t . The first borehole , KB - 1 , drilled in the ...
... values obtained are encouraging . The three bands have strike lengths varying from 150-500 m with surface assay values from 0.1 to 7.18g / t and trench assay values from 0.1 to 14 g / t . The first borehole , KB - 1 , drilled in the ...
Page 133
... values above the background value of 2 ppm , Lithogeochemical samples collected from the ex- posed ankerite gneiss show values of Mo upto 410 ppm , indicating the presence of anomalously high values in the shear zone within the river ...
... values above the background value of 2 ppm , Lithogeochemical samples collected from the ex- posed ankerite gneiss show values of Mo upto 410 ppm , indicating the presence of anomalously high values in the shear zone within the river ...
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Common terms and phrases
acid volcanics amphibolite ANANTAPUR DISTRICT ANDHRA PRADESH anomaly zones anorthosite assessment auriferous banded iron formation beach ridges bedrock beds BIF bands biotite biotite gneiss block boreholes carried charnockite chert Chitradurga clay delineated deposits depth Dharwar dips dolerite drilling dykes east eastern emplaced ENE-WSW excavated exposed field season folds foliation foundation gabbro geochemical GEOLOGICAL MAP geophysical geotechnical investigations gneiss Gneissic gold mineralisation granite gneiss granulite gravity grey grout hornblende INDEX indicated intrusives joints KARNATAKA KERALA kimberlite laterite lignite limestone lineament located mafic magnetic metabasalt migmatites mineral mineralised zones NE-SW NNW-SSE NW-SE occur overburden pegmatite Plate power house PROJECT pyrite quartz quartz veins quartzite regional reservoir river rock types samples scale schist belt schistose sediments shear zone slope soil southern spillway sq km strike length structural studies sulphides surveys TAMIL NADU thickness traversed trenching trending tunnel ultramafic upto vertical weathered width