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 26
... veins in pyroxenite and serpentinite within a partial ring - like circular zone in the south- half of the complex ( Plate 3.04 ) . Thin ijolite veins are also common in the feldspathic border zone . Ijolites predominate over melteigite ...
... veins in pyroxenite and serpentinite within a partial ring - like circular zone in the south- half of the complex ( Plate 3.04 ) . Thin ijolite veins are also common in the feldspathic border zone . Ijolites predominate over melteigite ...
Page 3
... veins and zoned crystals in pink gneiss and quartz veins . Strin- gers and veins occur in felspathised calcgneiss exposed south of Kotri . The fluorite is colour- zoned with violet , green , yellowish green and white ( colourless ) ...
... veins and zoned crystals in pink gneiss and quartz veins . Strin- gers and veins occur in felspathised calcgneiss exposed south of Kotri . The fluorite is colour- zoned with violet , green , yellowish green and white ( colourless ) ...
Page 35
... Veins Two generations of quartz veins are expo- sed in the area . The first generation veins have cross cutting relation with the second generation quartz veins . The earlier generation veins are barren and the later generation veins ...
... Veins Two generations of quartz veins are expo- sed in the area . The first generation veins have cross cutting relation with the second generation quartz veins . The earlier generation veins are barren and the later generation veins ...
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