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 amphibolite ANDHRA PRADESH anomaly assessment associated bands beach beds block body boreholes carried charnockite clay collected Complex consists construction continued covered delineated deposits depth detailed dips direction DISTRICT drilling dykes east eastern excavated exposed extension field folds foliation formation foundation fresh GEOLOGICAL GEOLOGICAL MAP GEOTECHNICAL gneiss gold granite gravity Group hill identified INDEX indicated intrusives joints kimberlite length lignite located magnetic major material metabasalt migmatites mineral mineralisation nature observed occur pegmatite pink places Plate present PROJECT proposed quartz veins quartzite range regional river rock samples scale schist belt sediments seen sericite shear zone side slope soil southern sq km strike strike length structural studies suggested sulphides surface surveys taken TAMIL NADU thickness traced traversed trenching trending tunnel types unit upto values varies vertical weathered wide width