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. |
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Page 40
... major to trace proportions with a little variation of Illite and Chlorite in some samples . X - ray analysis of ... major , Illite C.A. ยท Chlorite and Feldspar - Trace Amphibole - Trace Likely Quartz - major , Illite - minor , Feldspar ...
... major to trace proportions with a little variation of Illite and Chlorite in some samples . X - ray analysis of ... major , Illite C.A. ยท Chlorite and Feldspar - Trace Amphibole - Trace Likely Quartz - major , Illite - minor , Feldspar ...
Page 253
... major fining upward sequences with development of compara- tively thick coal seams . The coal swamp condition also varied from place to place . The sequence above Purewa / Khadia seam broadly represents coarsen- ing upward sequence with ...
... major fining upward sequences with development of compara- tively thick coal seams . The coal swamp condition also varied from place to place . The sequence above Purewa / Khadia seam broadly represents coarsen- ing upward sequence with ...
Page 255
... major sands percent within regional coals seams ( viz.Ib , Rampur and Lajkura , in ascending stratigraphic order ) , ii ) major sands percent in interseam strata , iii ) thick- ness of regional seams , and iv ) thickness of interburden ...
... major sands percent within regional coals seams ( viz.Ib , Rampur and Lajkura , in ascending stratigraphic order ) , ii ) major sands percent in interseam strata , iii ) thick- ness of regional seams , and iv ) thickness of interburden ...
Contents
Stratigraphy Division | 11 |
Central Petrological Laboratories | 26 |
Geodata and Database Division | 43 |
Copyright | |
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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