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 18
... auriferous zones indicated by intergrated surveys . The rock types exposed in the area are domi- nated by mafic volcanics with subordinate acidic volcanics.The mafic volcanics are represented by schistose and massive amphibolite with ...
... auriferous zones indicated by intergrated surveys . The rock types exposed in the area are domi- nated by mafic volcanics with subordinate acidic volcanics.The mafic volcanics are represented by schistose and massive amphibolite with ...
Page 53
... auriferous prospects of the area as the analytical data are awaited . The acid - basic volcanic contacts , in 7 blocks in the schist belt , were tested by soil geochemical surveys for auriferous mineralisation in view of the significant ...
... auriferous prospects of the area as the analytical data are awaited . The acid - basic volcanic contacts , in 7 blocks in the schist belt , were tested by soil geochemical surveys for auriferous mineralisation in view of the significant ...
Page 65
... auriferous zones rang- ing in strike length from 70 to 200 m and varying in width from 0.6 to 3.8m have been identified by close trenching and sampling . The analytical results of most of the samples gave gold values ranging from 1 to 4 ...
... auriferous zones rang- ing in strike length from 70 to 200 m and varying in width from 0.6 to 3.8m have been identified by close trenching and sampling . The analytical results of most of the samples gave gold values ranging from 1 to 4 ...
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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