Records of the Geological Survey of India, Volume 113, Parts 4-6The Survey, 1980 - 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 85
... bands within the migmatitic assem- blage can be broadly differentiated into three main types viz . , sillimanite - quartz - schist , sillimanite - biotite ( cordierite ) -schist and sillimanite quartzite , all the three types showing ...
... bands within the migmatitic assem- blage can be broadly differentiated into three main types viz . , sillimanite - quartz - schist , sillimanite - biotite ( cordierite ) -schist and sillimanite quartzite , all the three types showing ...
Page 35
... band is composed of siliceous matter consisting of equant grains of quartz while the ferruginous band consists of irregular shaped to perfect automorphic cubes and octahedra of magnetite . At places , these bands have hard limonitic ...
... band is composed of siliceous matter consisting of equant grains of quartz while the ferruginous band consists of irregular shaped to perfect automorphic cubes and octahedra of magnetite . At places , these bands have hard limonitic ...
Page 38
... band lying on the eastern side of the field extends almost parallel to the other two . In these BMQ bands auriferous quartz lodes are seen both parallel and oblique to the bedding planes and presumably they have taken advantage of frac ...
... band lying on the eastern side of the field extends almost parallel to the other two . In these BMQ bands auriferous quartz lodes are seen both parallel and oblique to the bedding planes and presumably they have taken advantage of frac ...
Contents
Part | 1 |
Problems of correlation of PreGondwana rock units of Arunachal Pradesh and adjoining areasa review | 15 |
The Sung Valley alkaline ultramafic carbonatite complex East Khasi and Jaintia Hills districts Meghalaya | 24 |
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Common terms and phrases
alluvium anorthosite assemblage associated augite bands basalt flows basin beds belt biotite Bombay bore holes borehole calcite carbonatite Charnockite chert chlorite chromite clay clinopyroxene coal complex Deccan Trap deposits developed district drainage dykes emplaced fault felspar fluorite folds Formation fossil fragments gabbro geochemical Geol Geological Survey geomorphic gneisses Gondwana grade grains granite granulites greisens grey groundmass Group hill Himalayas ijolite indicated intrusive laterite layers limestone magnetite Manipur mapping Meghalaya metamorphic metres migmatites mineralisation minerals Narmada occur olivine opaque ophiolite phenocrysts phosphorite phyllite plagioclase Plate porphyritic Pradesh present pyroclastic pyroxene pyroxenite quartz quartz veins quartzite region river rocks samples sandstone schist seam sedimentary sediments sequence serpentinite shale sillimanite soil stratigraphic structure studies sub-surface surface Surv Survey of India Tapti tectonic thickness thin tion trending tuff ultramafic Unpublished GSI Report upto Vaghur valley volcanic zone