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 1
... suggested for these rocks . Their intimate asso- ciation with ophiolite complexes has prompted some to suggest that they ... suggest an island arc origin . - - Though albite - quartz rocks have been reported from the Naga Hills ophiolite ...
... suggested for these rocks . Their intimate asso- ciation with ophiolite complexes has prompted some to suggest that they ... suggest an island arc origin . - - Though albite - quartz rocks have been reported from the Naga Hills ophiolite ...
Page 4
... suggest that they are products of crystallisation of igneous melt . The composition of plagioclase ( Ab9590 ) , pre- sence of primary hornblende and the hydrothermal alteration suf- fered by the country rock along the contacts indicate ...
... suggest that they are products of crystallisation of igneous melt . The composition of plagioclase ( Ab9590 ) , pre- sence of primary hornblende and the hydrothermal alteration suf- fered by the country rock along the contacts indicate ...
Page 64
... suggest that these may be repetitions possibly due to folding ( S. Sengupta , pers . Comm ) . The details of the individual olistoliths are given in Table I , and geological sections of few selected localities are given in Fig . 18 and ...
... suggest that these may be repetitions possibly due to folding ( S. Sengupta , pers . Comm ) . The details of the individual olistoliths are given in Table I , and geological sections of few selected localities are given in Fig . 18 and ...
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