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 29
... schistose materials . Percentage of graphite increases towards the centre of the band . Changla Formation Banded Granite gneiss and Amphibolite Gneiss The schists near Meilang are succeeded by banded granite gneiss and hornblende gneiss ...
... schistose materials . Percentage of graphite increases towards the centre of the band . Changla Formation Banded Granite gneiss and Amphibolite Gneiss The schists near Meilang are succeeded by banded granite gneiss and hornblende gneiss ...
Page 30
... schistose host rock . Close to the contact the schists show in- cipient shearing . The contact zone is marked by migmatisation . Thin section of a diorite sample collected from north of Hayu- llang shows plagioclase , bluish green ...
... schistose host rock . Close to the contact the schists show in- cipient shearing . The contact zone is marked by migmatisation . Thin section of a diorite sample collected from north of Hayu- llang shows plagioclase , bluish green ...
Page 31
... schistose host rock . These ultramafites are associated with schist and marble iden- tical to those of Tidding saddle . The rock is dark greenish grey and consists predominantly of olivine and pyroxene which are serpentinised ...
... schistose host rock . These ultramafites are associated with schist and marble iden- tical to those of Tidding saddle . The rock is dark greenish grey and consists predominantly of olivine and pyroxene which are serpentinised ...
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