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Tamil Nadu Kerala
Geotechnical and Special
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amphibolite ANDHRA PRADESH anomaly associated bands basalt basic basin biotite block bodies boreholes carried channel clay coarse Code collected Complex comprises continued covered Deccan deposits depth detailed dips direction DISTRICT drilling dykes east exposed extending faults field flows folds foliation Formation foundation GEOLOGICAL MAP Geologist Geology Division gneiss gold Gondwana grained granite grey Group INDEX indicated intrusives joints lava length lignite located Lower Madhya Pradesh MAHARASHTRA medium mineral mineralisation moderately Nagpur nature occur pink places porphyritic present quartz veins quartzite ranging Regional represented river rock samples sand sandstone scale schist schist belt sediments seen sequence sericite shale shear soil sq km strike structure studies suggested surface surveys thick thin tion toposheet Trap traverse trench trending units Upper upto values varies volcanic width zone