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 11
... metamorphism . The inferred temperature range falls between 200 ° C to 550 ° C and the corresponding pressure ranges from 1 Kb to 11 Kb and the depth from few km to 300 km . The assemblage hornblende + actinolite + chlorite + ...
... metamorphism . The inferred temperature range falls between 200 ° C to 550 ° C and the corresponding pressure ranges from 1 Kb to 11 Kb and the depth from few km to 300 km . The assemblage hornblende + actinolite + chlorite + ...
Page 34
... Metamorphism The rock formations of this area have undergone meta- morphism upto epidote - emphibolite facies ... Metamorphic iso- grads follow the structural lines . Metamorphic zones on two limbs of a regional antiform are not well ...
... Metamorphism The rock formations of this area have undergone meta- morphism upto epidote - emphibolite facies ... Metamorphic iso- grads follow the structural lines . Metamorphic zones on two limbs of a regional antiform are not well ...
Page 79
... metamorphism , the earlier one in the staurolite grade and the later one in the biotite grade . This formation , according to Sinha Roy ( 1980 ) , incorporates the components of both the Daling and the Darjeeling gneisses . The Boleng ...
... metamorphism , the earlier one in the staurolite grade and the later one in the biotite grade . This formation , according to Sinha Roy ( 1980 ) , incorporates the components of both the Daling and the Darjeeling gneisses . The Boleng ...
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