Records of the Geological Survey of India, Volume 113, Part 4The Survey, 1984 - 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 24
... Upper Cretaceous age ( 84 + 13 Ma to 90 + 10 Ma ) for the complex . The body represents plutonic facies with dominance of ultramafic members over alkali and carbonate - rich phases which are generally more well developed in the volcanic ...
... Upper Cretaceous age ( 84 + 13 Ma to 90 + 10 Ma ) for the complex . The body represents plutonic facies with dominance of ultramafic members over alkali and carbonate - rich phases which are generally more well developed in the volcanic ...
Page 68
... Upper Cretaceous form the plateau in the north which slopes at a low angle to south - west and the almost east - west running strike ridges form the parallel hill ranges which are a conspicuous feature in the area . Some of the valleys ...
... Upper Cretaceous form the plateau in the north which slopes at a low angle to south - west and the almost east - west running strike ridges form the parallel hill ranges which are a conspicuous feature in the area . Some of the valleys ...
Page 89
... Upper Cretaceous while the upper age limit could possibly be ascribed as Eocene . MAP OF NAGA HILLS OPHIOLITES WITH ITS ENCLAVES SHOWING FOSSIL. By Introduction Recents studies in selected sectors of the ophi- olite belt of Nagaland ...
... Upper Cretaceous while the upper age limit could possibly be ascribed as Eocene . MAP OF NAGA HILLS OPHIOLITES WITH ITS ENCLAVES SHOWING FOSSIL. By Introduction Recents studies in selected sectors of the ophi- olite belt of Nagaland ...
Contents
GEOLOGICAL SURVEY OF INDIA | 1 |
Problems of correlation of PreGondwana rock units of Arunachal Pradesh and adjoining areasa review | 15 |
The Abor Group of rocks in Arunachal Pradesh | 48 |
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Common terms and phrases
Abor Volcanic Arunachal Pradesh assemblage associated axial bands basement bedrock beds belt biotite bore holes Buxa carbonatite Chattopadhyay chert chromite coal seam coalfields complex correlation Cretaceous crystalline Daling Darjeeling developed Disangs dykes exploration fault folds Formation Gamnom garnierite geochemical Geol Geological Survey GHOSH gneiss goethite Gondwana Grade grains granite Group Himalayas horizon ijolite Khasi limestone lineaments Lohit Lohit district Manipur Manipur East Maskut Meghalaya metamorphic migmatites mineral Mishmi Naga Hills Nagaland Nandy nepheline Ni-content North Eastern occur ophiolite ophiolite suite overburden phase Phokphur Plate postulated pyroxene pyroxenite quartz quartzite Ranga valley reflected refraction regional river rocks samples sandstone schist seam/s sedimentary sediments sequence serpentinite shale Shillong Siang district sillimanite Sirohi soil profile Sonapahar stratigraphic structural studies sub-surface Subansiri district Sung Valley Survey of India tectonic Tertiary thickness thrust Tidding serpentinites tion trending ultramafics Unpublished GSI Report upto veins zone