Records of the Geological Survey of India, Volume 127, Parts 1-2Government of India, 1992 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 15
... rocks adjacent to the granophyric hills . Megascopically , the acid volcanic rock is dark grey , very fine grained , porphyritic with phenocrysts of mainly quartz and occasionally a few feldspars within aphanitic groundmass ...
... rocks adjacent to the granophyric hills . Megascopically , the acid volcanic rock is dark grey , very fine grained , porphyritic with phenocrysts of mainly quartz and occasionally a few feldspars within aphanitic groundmass ...
Page 25
... rocks in the belt . Admittedly , the episodic generation of charnockitic rocks in the belt need substantiation by reliable geochronologi- cal data . Available radiometric age data on the charnockitic rocks of the belt are meagre ...
... rocks in the belt . Admittedly , the episodic generation of charnockitic rocks in the belt need substantiation by reliable geochronologi- cal data . Available radiometric age data on the charnockitic rocks of the belt are meagre ...
Page 192
... rocks and Pre- Sakoli gneiss - migmatite complex with older supracrustal as- semblages ( fig . 1 ) Pre - Sakoli rocks include granite gneiss and migmatites having compositional range from tonalite / granodiorite to granite , alkali ...
... rocks and Pre- Sakoli gneiss - migmatite complex with older supracrustal as- semblages ( fig . 1 ) Pre - Sakoli rocks include granite gneiss and migmatites having compositional range from tonalite / granodiorite to granite , alkali ...
Contents
COORDINATION TECHNICAL DIVISION | |
FOREWORD | |
PALAEONTOLOGY DIVISION I 10 | |
Copyright | |
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amphibolite analysis Andhra Pradesh anomalies associated Asstt bands Barakar Barakar Formation base metal basin Bihar block boreholes carried Chakraborty chemical clay coal seams Coalfield comprising core covered deposits depth Director Geologist district DIVISION Director drilling eastern ENGINEERING GEOLOGY exploration for coal field season fold GEODATA geological mapping Geologist Jr Geophysicist geotechnical investigation Ghosh gneiss gold Gondwana grade grained granitoids gravity Group Headquarters heavy mineral India indicated intersected Kumar limestone located Madhya Pradesh magnetic Maharashtra mineralisation Orissa PETROLOGY phyllite Precambrian programme Project quartz veins quartzite Quaternary Rajasthan Raniganj Regional exploration REMOTE SENSING river S.T.A. Geol Sakoli samples were collected sand sandstone scale schist schist belt Seabed survey seam zones sector sediments sequence shale shear zone Shri A.K. Singh Singhbhum sq km sq.km stage geotechnical investigation studies sulphide surface Tamil Nadu tectonic thematic mapping thickness Toposheet traverse trending undertaken upto Valley volcanic