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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Results 1-3 of 45
Page 25
... zone of fenite along the contact . The border zone is at places highly brecciated with development of a mixed zone of pyroxenite - fenitised quartzite , parti- cularly southwest of Maskut ( 25 ° 33 ′ : 92 ° 08 ′ ) . In- clusions of ...
... zone of fenite along the contact . The border zone is at places highly brecciated with development of a mixed zone of pyroxenite - fenitised quartzite , parti- cularly southwest of Maskut ( 25 ° 33 ′ : 92 ° 08 ′ ) . In- clusions of ...
Page 32
... zone is about 550 m long and 250 m wide and trends NNW - SSE . A total of 1057. 15 m was drilled in this zone . Nb content in these rocks varies from 20 to 800 ppm ; The richer zones con- tain around 400-800 ppm Nb . But such zones are ...
... zone is about 550 m long and 250 m wide and trends NNW - SSE . A total of 1057. 15 m was drilled in this zone . Nb content in these rocks varies from 20 to 800 ppm ; The richer zones con- tain around 400-800 ppm Nb . But such zones are ...
Page 40
... Zone and matrix of pebbly zone is probably due to the presence of adsorbed Ni in goethite and discrete garnierite . The presence of kaolinite ( ? ) in the soil pro- file has been identified by DTA though the X - ray studies of the same ...
... Zone and matrix of pebbly zone is probably due to the presence of adsorbed Ni in goethite and discrete garnierite . The presence of kaolinite ( ? ) in the soil pro- file has been identified by DTA though the X - ray studies of the same ...
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