Records of the Geological Survey of India, Volume 130, Part 2Government of India, 1995 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 11
... volcanics imply their generation from crustal melts . Three samples of acid volcanics from Ankro area of Puruliya district also yield a comparable Rb - Sr WR isochron age of ca. 1500 Ma . These results suggest a Mid - Proterozoic acid ...
... volcanics imply their generation from crustal melts . Three samples of acid volcanics from Ankro area of Puruliya district also yield a comparable Rb - Sr WR isochron age of ca. 1500 Ma . These results suggest a Mid - Proterozoic acid ...
Page 102
... volcanics ( felsic tuff of rhyo- lite to rhyodacite composition ) , metabasics and quartz- feldspar , quartz - tourmaline veinlets . Occurrence of gold mineralisation within similar setting i.e. the acid volcanics associated with or ...
... volcanics ( felsic tuff of rhyo- lite to rhyodacite composition ) , metabasics and quartz- feldspar , quartz - tourmaline veinlets . Occurrence of gold mineralisation within similar setting i.e. the acid volcanics associated with or ...
Page 118
... volcanics with subordinate felsic volcanics enveloped by granodiorite and tonalite suite of rocks . The mafic volcanics include massive , schis- tose and granular amphibolite and the felsic volcanics are represented by micaceous quartzo ...
... volcanics with subordinate felsic volcanics enveloped by granodiorite and tonalite suite of rocks . The mafic volcanics include massive , schis- tose and granular amphibolite and the felsic volcanics are represented by micaceous quartzo ...
Contents
Geochronology and Isotope Geology Division | 11 |
Central Petrological Laboratories | 43 |
Central Geophysics Division | 49 |
Copyright | |
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Common terms and phrases
aeromagnetic AMSE Wing analysis anomalies assemblage bands Barakar Barakar Formation Barren Measure basin bathymetric Bay of Bengal Bhutan Bihar block boreholes carried charnockites chemical coal seam zones coarse coast Code core samples covered cruise depth range DISTRICT Division drilling EXPLORATION FOR COAL field season fly-ash GEOLOGICAL MAP geophysical geotechnical gneiss gold Gondwana grade grains granite granitoids grey ground evaluation Gujarat heavy mineral indicated innershelf intersected investigation isobath Kakinada Kamthi Formation Kerala lignite limestone line km lithounits located magnetic microtextures mineralisation multisensor nearshore occur olivine Orissa phyllite placer plagioclase port Pradesh programme quartzite R. V. Samudra Rajasthan Raniganj REGIONAL EXPLORATION ridge rocks Samudra Manthan sand sandstone scale schist seabed seam zones sector sediments shale shelf silty clay slope soil southern sq km strike studies subsurface surface Talcher thickness tion Toposheet trending Twin Otter upto valley varies volcanics