Records of the Geological Survey of India, Volume 129, Parts 2-3The Survey, 1998 - 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. |
From inside the book
Results 1-3 of 53
Page 103
... magnetic picture in major part of the area with a few isolated magnetic highs and mag- netic contours showing structural trends in the cen- tral part . In general , the disorganised magnetic pic- ture corresponds to mica schists and ...
... magnetic picture in major part of the area with a few isolated magnetic highs and mag- netic contours showing structural trends in the cen- tral part . In general , the disorganised magnetic pic- ture corresponds to mica schists and ...
Page 107
... magnetic susceptibility / distance ratio in the range of 150 to 200 nT / km and short E - W magnetic breaks indicating strike faults within the sequence . The boundary faults of the sequence against the base- ment are also depicted by ...
... magnetic susceptibility / distance ratio in the range of 150 to 200 nT / km and short E - W magnetic breaks indicating strike faults within the sequence . The boundary faults of the sequence against the base- ment are also depicted by ...
Page 136
... magnetic zones based on the shape , size , orientation , intensity , gradient and amplitude of magnetic contours . The main causative sources for magnetic anomalies in the area are the hetero- geneous nature of geological formation with ...
... magnetic zones based on the shape , size , orientation , intensity , gradient and amplitude of magnetic contours . The main causative sources for magnetic anomalies in the area are the hetero- geneous nature of geological formation with ...
Contents
Stratigraphy Division | 11 |
Central Petrological Laboratories | 26 |
Geodata and Database Division | 43 |
Copyright | |
23 other sections not shown
Other editions - View all
Common terms and phrases
acid volcanics aeromagnetic amphibolite anomaly bands Barakar Barakar Formation Barren Measure basemetal basic basin belt Bhutan Bihar biotite block boreholes charnockite Chhotanagpur clay coal seams Coalfield coarse Code core covered depth district Division drilling dykes east eastern faults field season foliation geochemical GEOLOGICAL MAP geophysical GEOTECHNICAL INVESTIGATION Ghosh gneiss gneissic gold Gondwana grade grained granite granite gneiss grey ground evaluation heavy minerals India indicated intersected intrusives Kamthi laterite limestone lineament located magnetic mica schist migmatite mineralisation nala NW-SE occur Orissa OVERVIEW pegmatite phyllite plagioclase Pradesh programme Project Proterozoic Purulia Purulia district quartz quartz veins quartzite Raniganj REGIONAL EXPLORATION river samples sand sandstone scale schist seam zones sector sediments sequence shale shear zone Sikkim Singhbhum southern sq km sq.km STAGE GEOTECHNICAL INVESTIGATION strike length structure sulphide surface survey Talchir terrain thickness tion Toposheet trending ultramafic upto varies West Bengal