Records of the Geological Survey of India, Volume 129, Part 5Includes the "Annual report of the Geological Survey of India," 1867- |
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acid volcanics amphibolite ANANTAPUR DISTRICT ANDHRA PRADESH anomaly zones anorthosite assessment auriferous banded iron formation beach ridges bedrock beds BIF bands biotite 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 granulite gravity grey grout hornblende indicated intrusives joints KARNATAKA KERALA kimberlite laterite layers lignite limestone lineament located mafic magnetic magnetite metabasalt migmatites mineral mineralised zones NE-SW NNW-SSE NW-SE occur overburden pegmatite pink Plate power house PROJECT pyrite pyroxene 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 traced traversed trenching trending tunnel ultramafic upto vertical weathered width