Records of the Geological Survey of India, Volume 129, Parts 2-3The Survey, 1994 - 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 32
... volcanics ( tuffs , tuffaceous phyllite ) within the Singhbhum granite also form integral part of the Archean granite - greenstone belt . While the ultrabasics are of the composition of komatiites , the felsic volcanics are rhyodacitic ...
... volcanics ( tuffs , tuffaceous phyllite ) within the Singhbhum granite also form integral part of the Archean granite - greenstone belt . While the ultrabasics are of the composition of komatiites , the felsic volcanics are rhyodacitic ...
Page 25
... volcanic rocks and to find out its rela- tion with the basic volcanics of Iron Ore Group and the associated metasedimentaries ( Plate40 ) . This item of work is an input for RPL , ER work . Acid volcanics lie along a zone oriented ...
... volcanic rocks and to find out its rela- tion with the basic volcanics of Iron Ore Group and the associated metasedimentaries ( Plate40 ) . This item of work is an input for RPL , ER work . Acid volcanics lie along a zone oriented ...
Page 30
... volcanics , variegated shales , banded hae- matite jasper , dolerite and gabbro intrusives . Acid volcanic rocks are very rare in the study area . One body of acid volcanic rock about 1 km . in length , arcuate in shape and trending NE ...
... volcanics , variegated shales , banded hae- matite jasper , dolerite and gabbro intrusives . Acid volcanic rocks are very rare in the study area . One body of acid volcanic rock about 1 km . in length , arcuate in shape and trending NE ...
Contents
Stratigraphy Division | 11 |
Central Petrological Laboratories | 26 |
Geodata and Database Division | 43 |
Copyright | |
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acid volcanics aeromagnetic amphibolite analysis anomaly bands Barakar Barakar Formation Barren Measure basemetal basin belt 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 Madhya Pradesh magnetic mica schist migmatite mineralisation 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 soil sq km sq.km STAGE GEOTECHNICAL INVESTIGATION strike length structure sulphide survey Talchir terrain thickness tion Toposheet trending ultramafic upto varies West Bengal