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 26
... bodies are small , rarely exceeding 10-40 m in width and 50-100 m in length . They are in general very coarse - grained , individual carbonate grains being 3-10 mm across . Primary banding is common within the dykes defined by a patite ...
... bodies are small , rarely exceeding 10-40 m in width and 50-100 m in length . They are in general very coarse - grained , individual carbonate grains being 3-10 mm across . Primary banding is common within the dykes defined by a patite ...
Page 86
... bodies engulfed and frozen in the migmatitic and gneissic country rock . The great degree of contrast in the com- petence of the rock types at the time of deformation is illustrated by the outcrop pattern of the rock bodies , with the ...
... bodies engulfed and frozen in the migmatitic and gneissic country rock . The great degree of contrast in the com- petence of the rock types at the time of deformation is illustrated by the outcrop pattern of the rock bodies , with the ...
Page 87
... Bodies Petrographically the sillimanite - bearing rocks of Sonapahar area consist mainly of sillimanite , quartz , cordierite , biotite and corundum with rutile , plagio- clase and other opaques as accessory minerals . The sillimanite ...
... Bodies Petrographically the sillimanite - bearing rocks of Sonapahar area consist mainly of sillimanite , quartz , cordierite , biotite and corundum with rutile , plagio- clase and other opaques as accessory minerals . The sillimanite ...
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 |
7 other sections not shown
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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