Records of the Geological Survey of India, Volume 113, Part 6The 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 41
... Phenocrysts Olivine : Olivine phenocrysts ( 0.2 mm to 4 mm ) occur as idiomorphic crystals and range between 3 and 20 per cent by volume in different flows . They occur as single crystals and also in aggregates and are colourless to ...
... Phenocrysts Olivine : Olivine phenocrysts ( 0.2 mm to 4 mm ) occur as idiomorphic crystals and range between 3 and 20 per cent by volume in different flows . They occur as single crystals and also in aggregates and are colourless to ...
Page 56
... PHENOCRYSTS CONTENT 24 while the plagioclase phenocrysts are generally seen lying athwart to them . The groundmass of flow Nos . Bu - 6 , 7 and 8 exhibits conspicuous variation in grain size , marked by the presence of several ...
... PHENOCRYSTS CONTENT 24 while the plagioclase phenocrysts are generally seen lying athwart to them . The groundmass of flow Nos . Bu - 6 , 7 and 8 exhibits conspicuous variation in grain size , marked by the presence of several ...
Page 60
... phenocrysts ( 1.0 % to 12.5 % ) and occurs in all the flows . The plagioclase phenocrysts are idiomorphic and occur as subhedral to euhedral laths and tabular crystals upto 5 mm or more in length and often form glomeroporphyritic aggre ...
... phenocrysts ( 1.0 % to 12.5 % ) and occurs in all the flows . The plagioclase phenocrysts are idiomorphic and occur as subhedral to euhedral laths and tabular crystals upto 5 mm or more in length and often form glomeroporphyritic aggre ...
Contents
Geochemical distribution of Trace Elements Over the mineralised fault zone PAGE | 1 |
Geology of parts of Abujhmar area Narainpur Tehsil Bastar district Madhya | 24 |
Geological and Petrographic Studies of the Deccan Basalt Flows | 33 |
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Abujhmar alluvium assemblages augite basalt flows basin Bastar biotite block Bombay Island bore holes brown Buldana calcite charnockites chert cherty phosphorite chlorite clay clayey clinopyroxene conglomerate crystals Deccan Trap deposits dips district drainage erosional exhibit felspar formation fossil fragments Geol geomorphic glass gneisses grained Granite Gneiss Granulite Complex granulites greisens grey groundmass Group Gundul indicated Jhabua Kuhi laterite lava leptynites limestone Madhya Pradesh Maharashtra Maspur metasediments migmatite minerals Narmada Valley NW-SE occur olivine opaque oxides palagonite pebbles phenocrysts phosphatic phosphorite pigeonite plagioclase Plate porphyritic present pyroclastic pyroxene quartz quartzite Quaternary region river rock samples sand sandstone scarp schist seam sedimentary sediments sequence shale silt siltstone slope stream length stromatolites sub-surface surface Surv Survey of India Tapti tectonic terraces thick thin tourmaline trending tuff tungsten mineralisation Unconformity unit upto Vaghur varies vesicles vesicular volcanic wolframite zeolites