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 25
... Major rock types met within the area are para- metamorphic schists and gneisses intruded by diorite - granodio- rite - tonalite , amphibolite , granite , aplite , pegmatite and veins of quartz , feldspar and epidote . These rocks are ...
... Major rock types met within the area are para- metamorphic schists and gneisses intruded by diorite - granodio- rite - tonalite , amphibolite , granite , aplite , pegmatite and veins of quartz , feldspar and epidote . These rocks are ...
Page 35
... major fault . The granodio- rite - tonalite is syntectonic . Conclusion Strike mapping of the area between Lohit valley and Dibang valley to tie up the geology may throw more light on the actual nature of the syntaxial bend . It may ...
... major fault . The granodio- rite - tonalite is syntectonic . Conclusion Strike mapping of the area between Lohit valley and Dibang valley to tie up the geology may throw more light on the actual nature of the syntaxial bend . It may ...
Page 47
... major structure is an isoclinal , overturned , re- clined fold of synclinal nature of first generation ; congrous major and minor folds are present on the limbs and hinges . The phase of deformation is associated with the development of ...
... major structure is an isoclinal , overturned , re- clined fold of synclinal nature of first generation ; congrous major and minor folds are present on the limbs and hinges . The phase of deformation is associated with the development of ...
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