Records of the Geological Survey of India, Volume 113, Parts 5-6Government of India, 1980 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 52
... Pigeonite ranges from 7 % to 42 % in the groundmass of different flows . Incidence of pigeonite , is inversely proportional to the degree of porphyricity , and is much higher in flows with fine grained groundmass indicating that it is a ...
... Pigeonite ranges from 7 % to 42 % in the groundmass of different flows . Incidence of pigeonite , is inversely proportional to the degree of porphyricity , and is much higher in flows with fine grained groundmass indicating that it is a ...
Page 60
... pigeonite is present in varying proportions in all the flows . The proportion of pigeonite not only varies from flow to flow but also shows variation within the parts of the same flow . Estimation of 2 V by observing the character of ...
... pigeonite is present in varying proportions in all the flows . The proportion of pigeonite not only varies from flow to flow but also shows variation within the parts of the same flow . Estimation of 2 V by observing the character of ...
Page 61
... pigeonite in the groundmass . Pigeonite content varies greatly in different parts of the same flow , tending to be somewhat higher in basal and upper parts . Plagioclase Felspar The plagioclase felspar ( An 55-65 ) in the groundmass ...
... pigeonite in the groundmass . Pigeonite content varies greatly in different parts of the same flow , tending to be somewhat higher in basal and upper parts . Plagioclase Felspar The plagioclase felspar ( An 55-65 ) in the groundmass ...
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 Ambadongar anorthosite associated augite basalt flows basin beds biotite block bore holes borehole breccia Buldana calcite Charnockite chert chlorite clay clinopyroxene Deccan Trap deposits depth district drainage drilled dykes erosional exhibit exposed fault felspar fluorite folds formation fossil fragments gabbro geochemical Geol Geological Survey geomorphic glass gm/tonne gneisses grade grained granite granulites greisens grey groundmass Group Gundul hill indicated laterite lava layers limestone magnetite Maharashtra metasediments metres migmatite mineralisation minerals Narmada Valley NW-SE occurs olivine opaque phenocrysts phosphorite phyllite plagioclase Plate porphyritic present pyrite pyroclastic pyroxene quartz quartz veins quartzite Quaternary region Rhyolite river rocks samples sandstone schist seam sediments sequence shale slope spores stream stromatolites structure sub-surface sulphide surface Surv Survey of India Tapti thick thin trending tuff Unpublished GSI Report upto Vaghur varies volcanic width zone