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 48
... Ranga valley , Subansiri district was con- sidered equivalent of Abor Volcanic Series by Laskar ( 1956 ) . The sequence of volcanic rocks and sedimentary beds are now included under the Abor Group . The Abor Group is found in the Lesser ...
... Ranga valley , Subansiri district was con- sidered equivalent of Abor Volcanic Series by Laskar ( 1956 ) . The sequence of volcanic rocks and sedimentary beds are now included under the Abor Group . The Abor Group is found in the Lesser ...
Page 50
... Ranga valley . The volcanic flows are never seen associated with this formation . The diamictite is , in general , a massive , very poorly sorted pebbly sandstone , at places containing stratified layers of siltstone and shale . The ...
... Ranga valley . The volcanic flows are never seen associated with this formation . The diamictite is , in general , a massive , very poorly sorted pebbly sandstone , at places containing stratified layers of siltstone and shale . The ...
Page 51
... Ranga valley near Seventh Camp on the southern bank of the river . The acidic variants are very much fine grai- ned and light coloured . These are found north of Boleng in the Siang district . Under the micro- scope , the rhyolites show ...
... Ranga valley near Seventh Camp on the southern bank of the river . The acidic variants are very much fine grai- ned and light coloured . These are found north of Boleng in the Siang district . Under the micro- scope , the rhyolites show ...
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