Records of the Geological Survey of India, Volume 132, Part 2Government of India, 1996 - 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 17
... gneiss and biotite gneiss . The neosomes vary in width from few cm to 10 cm . The Rb / Sr ratio of the samples range from 0.0835 to 0.1414 . Rb - Sr whole rock isotopic studies of Isanatham migmatitic gneiss reveal an age of ca. 750 Ma ...
... gneiss and biotite gneiss . The neosomes vary in width from few cm to 10 cm . The Rb / Sr ratio of the samples range from 0.0835 to 0.1414 . Rb - Sr whole rock isotopic studies of Isanatham migmatitic gneiss reveal an age of ca. 750 Ma ...
Page 64
... gneiss and augen gneiss exposed in the area are probably orthogneisses , representing early granitic to tonalitic intrusives . These rocks are distinctly banded with segregation of mafic and felsic minerals . The bands are parallel to ...
... gneiss and augen gneiss exposed in the area are probably orthogneisses , representing early granitic to tonalitic intrusives . These rocks are distinctly banded with segregation of mafic and felsic minerals . The bands are parallel to ...
Page 143
... GNEISS BIOTITE HORN BLENDE GNEISS P + P PYROXENE - GRANITOID 3 AMPHIBOLE GNEISS AMPHIBOLITE PYROXENITE BANDED MAGNETE QUARTZITE BEDDING FOLIATION / GNEISSOSITY SHEAR ZONE SHEAR ZONE WITH BRECCIATION AEROMAGNETIC LOW AEROMAGNETIC HIGH ...
... GNEISS BIOTITE HORN BLENDE GNEISS P + P PYROXENE - GRANITOID 3 AMPHIBOLE GNEISS AMPHIBOLITE PYROXENITE BANDED MAGNETE QUARTZITE BEDDING FOLIATION / GNEISSOSITY SHEAR ZONE SHEAR ZONE WITH BRECCIATION AEROMAGNETIC LOW AEROMAGNETIC HIGH ...
Contents
Antarctica Division | 63 |
Bhutan Unit | 69 |
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING | 85 |
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aeromagnetic Andhra anomalies assemblage Barakar Barakar coal seams Barakar Formation Barren Measures base metal basin Bhutan Bihar Block borehole carbonaceous carried comprises core covered Cruise Deccan Traps delineated depth range district drilling dykes Dzongkhag EXPLORATION FOR COAL exposed fault field season foraminifera garnet geochemical Geological Map geophysical gneiss gold Gondwana grade granite granulite grey ground evaluation Group horizons INDEX indicate intersected investigation Kamthi lamproites lignite limestone limestone band lineament located Madhya Pradesh magnetic metamorphic mineral mineralisation multisensor NW-SE occur Orissa pegmatite phyllite programme quartz quartzite Raniganj Raniganj Coalfield Raniganj Formation Regional exploration remote sensing ridge rocks samples sand sandstone scale schist seabed seam zones sector sediments sequence shale shallow shear zone Singhbhum Sohagpur Coalfield soil southern sq km strike structural subsurface surface surveys Talchir Formation Tamil Nadu thickness Toposheet trending ultramafic upto Valley Coalfield West Bengal