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PHOTOGEOLOGY AND REMOTE SENSING DIVISION
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING
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analysis anomaly associated bands basalt base basin belt block boreholes Calcutta carried clay coal collected completed comprising construction continued core covered deposits depth detailed developed dips Director district Division drilling east exploration exposed extending fault field flows folds Formation foundation Garhwal geological geological mapping geophysical gneiss gold grade granite grey Group Headquarters holes indicated interpretation intrusive investigation length lignite limestone located logging Lower magnetic major material measures mineral mineralisation Nagpur observed occurs pegmatites phyllite power house Pradesh present Project proposed quartz quartzite range recorded regional reported represented revealed river rocks samples sand sandstone scale schist seams sediments sericite shale shear sheets Shri soil sq km strike structure studies suggested surface surveys thickness tion traverses trench trending tunnel types units Upper values various varying veins zone