Records of the Geological Survey of India, Volume 119, Part 1government of India., 1989 - Geology 1867- includes the "Annual report of the Geological survey of India". |
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Page 194
... grade meta- morphic rocks ( The Central Crystallines ) start showing pro - grade metamorphic minerals . It starts with garnet and reaches to doubted sillimanite ( ? ) grade . The Cen- tral Crystalline rocks comprise , grey to dark grey ...
... grade meta- morphic rocks ( The Central Crystallines ) start showing pro - grade metamorphic minerals . It starts with garnet and reaches to doubted sillimanite ( ? ) grade . The Cen- tral Crystalline rocks comprise , grey to dark grey ...
Page 200
... grade metamorphites of the transitional series . Wall rock altera- tion ( sericitisation , kaolinasation ) are ... grade . Zone A : ( a ) Strike length ( b ) Width ( c ) Dip length ( d ) Average grade ( e ) Tonnage Zone B : ( a ) Strike ...
... grade metamorphites of the transitional series . Wall rock altera- tion ( sericitisation , kaolinasation ) are ... grade . Zone A : ( a ) Strike length ( b ) Width ( c ) Dip length ( d ) Average grade ( e ) Tonnage Zone B : ( a ) Strike ...
Page 322
... grade and up to 100 m depth ) , or 0.9 m tonnes of ore with 5.7 % Pb + Zn at 4 % cut - off grade . Three more boreholes ( BJH - 14 , 15 and 16 ) of 545.40 m aggregate length drilled in this block during 1984-85 F. S. indicated ( i ) ...
... grade and up to 100 m depth ) , or 0.9 m tonnes of ore with 5.7 % Pb + Zn at 4 % cut - off grade . Three more boreholes ( BJH - 14 , 15 and 16 ) of 545.40 m aggregate length drilled in this block during 1984-85 F. S. indicated ( i ) ...
Contents
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING | 32 |
RESEARCH AND DEVELOPMENT DIVISION | 41 |
MAP COMPILATION PUBLICATION AND INFORMATION DIVISION | 48 |
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amphibolite analysis Andhra Pradesh anomaly Asstt bands Banerjee basalt basin bed rock belt Bijawar biotite block boreholes Calcutta Chakraborty charnockite chemical clay coal comprising covered Deccan Trap deposits depth dips Director district DIVISION Headquarters Divn dolomite dykes exploration exposed field season folds Formation fossils geochemical geological mapping Geologist Jr Geology Division geophysical geotechnical investigation Ghosh gneiss Gondwana grade granite gneiss grey Gupta Hyderabad indicated Jaipur Kumar Laboratory limestone line km located logging Lucknow magnetic mica schist million tonnes mineral mineralisation Mishra Mukherjee Nagpur occurs pegmatites phyllite power house Pradesh quartz quartz veins quartzite Quaternary Rajasthan Regional river rock types S.T.A. Geology S/Shri sand sandstone scale schist seams sediments shale Sharma shear zone sheets Shillong Shri siltstone Singh spillway sq km sq km area Srivastava strike length studies sulphide surface surveys thickness tion traverses trench trending tunnel