Records of the Geological Survey of India, Volume 124, Part 1The Survey, 1999 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 153
... exposed except at two places where Precambrian rocks are exposed . Precambrian rocks comprise biotite gneisses having quartz veins . These rocks are exposed along Brahmaputra river channel at Dhubri and at Gauripur . Quatenary formation ...
... exposed except at two places where Precambrian rocks are exposed . Precambrian rocks comprise biotite gneisses having quartz veins . These rocks are exposed along Brahmaputra river channel at Dhubri and at Gauripur . Quatenary formation ...
Page 184
... exposed intermit- tently over a strike length of 1.6 km with exposed width of 5 to 40 m , trending east - west . Tungsten value ranges from less than 5 ppm to 15 ppm in granitic rock , less than 5 ppm to 20 ppm in hybrid rock ( agmatite ) ...
... exposed intermit- tently over a strike length of 1.6 km with exposed width of 5 to 40 m , trending east - west . Tungsten value ranges from less than 5 ppm to 15 ppm in granitic rock , less than 5 ppm to 20 ppm in hybrid rock ( agmatite ) ...
Page 240
... exposed in both the foundation pits for the piers P1 and P2 . However , sheared rock is exposed all along the eastern margin inside the kerb in pit P1 and along the western margin in the pit P2 . Two boreholes have been recommended ...
... exposed in both the foundation pits for the piers P1 and P2 . However , sheared rock is exposed all along the eastern margin inside the kerb in pit P1 and along the western margin in the pit P2 . Two boreholes have been recommended ...
Contents
AIRBORNE MINERAL SURVEYS EXPLORATION WING 28 | 28 |
MARINE WING 4757 | 47 |
CENTRAL REGION 5889 | 58 |
Copyright | |
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alluvium amphibolite analysis Andhra Pradesh anomaly associated Asstt bands basalt base metal basin bed rock Bihar biotite block boreholes carried chalcopyrite charnockite clay coal seams coalfield Construction stage core covering deposits depth Director Geologist district Code DIVISION Headquarters drilling dykes excavation exploration exposed Formation foundation geochemical geological investigation geological mapping Geologist Jr geophysical Geophysicist geotechnical investigation gneiss gold Gondwana grained granite granite gneiss granitoids Group holes indicated km long Kumar limestone line km located logging migmatite mineral mineralisation occurs Orissa pegmatite phyllite power house Pradesh Precambrian project envisages construction quartz quartz veins quartzite Quaternary Rajasthan Raniganj river rock types samples were collected sand sandstone scale schist schist belt sediments shale shear zone Shri A. K. Singhbhum spillway sq km sq km area stage geotechnical investigation strike length studies sulphide Supergroup surface surveys thick tion Toposheet traverse trending tunnel upto volcanics West Bengal