Records of the Geological Survey of IndiaThe Survey, 1986 - 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 37
... concentrations are usually located in 2nd and 3rd order streams and ( iii ) areas of convergence of slopes are the most favourable locales for the concentration of sillimanite and corrundum float boulders . Introduction Sillimanite ...
... concentrations are usually located in 2nd and 3rd order streams and ( iii ) areas of convergence of slopes are the most favourable locales for the concentration of sillimanite and corrundum float boulders . Introduction Sillimanite ...
Page 41
... concentration of sillimanite and corrundum float boulders . The 1st order streams are too near and 4th order streams too far away from the insitu schist band , to be areas of major concentration of float boulders . In case , a hill ...
... concentration of sillimanite and corrundum float boulders . The 1st order streams are too near and 4th order streams too far away from the insitu schist band , to be areas of major concentration of float boulders . In case , a hill ...
Page 42
... concentration has reached its bottom , is the change in the colour of soil and emergence of highly siliceous clayey insitu soil de- rived from the migmatites . In local miners jargon . this clayey soil is referred to as Balu Mitti ...
... concentration has reached its bottom , is the change in the colour of soil and emergence of highly siliceous clayey insitu soil de- rived from the migmatites . In local miners jargon . this clayey soil is referred to as Balu Mitti ...
Contents
PETROLOGY AND CHEMISTRY OF LEUCOCRATIC ROCKS FROM NAGA | 1 |
BLUE SCHISTS C TYPE ECLOGITES AND GARNET BEARING MAFIC | 7 |
THE NICKELIFEROUS MAGNETITE ASSOCIATED WITH THE NAGA | 15 |
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Abor Volcanics albite amphibolite antiform Arunachal Pradesh assemblage basin blue schists calcite Chattopadhyay cherty chlorite chromite coarse colour column Dalbuing Delai river deposits diamictite Disang Formation East Siang district eclogites Eocene epidote facies feldspar float boulders folding foliation foot hills fossils garnet Geol Geological Survey glaucophane gneiss Gondwana grey greyish Hills ophiolite belt hills/ridges Himalaya hornblende host rock Hunli intercalations Ithun valley limestone Lohit Lower mafic mafic segregations magnetite magnetite body Manipur margin matrix medium grained metamorphism mineral Miri Formation Miri Group Naga Hills Naga Hills ophiolite Nagaland nala NE-SW Nummulitic occur oligomictic conglomerate Olistostromal opaques ophiolite Permian phyllite plagioclase plagiogranite Plate quartz quartzite Radiolaria region samples sandstone schist schist band schistose sedimentaries sediments sequence serpentinites shale shows sillimanite siltstone Singh structure Surv Survey of India tectonic thick thin Tidding trending Ukhrul ultramafics Upper upto veins Vidyadharan white quartzite Yinkiong zone