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 34
... places , plagioclase is absent . Schis- tosity is well defined by flaky minerals musco- vite and biotite . Quartz grains exhibit strong undulose extinction . At places , biotite concen- tration is more , imparting distinct banding ...
... places , plagioclase is absent . Schis- tosity is well defined by flaky minerals musco- vite and biotite . Quartz grains exhibit strong undulose extinction . At places , biotite concen- tration is more , imparting distinct banding ...
Page 29
... places by volcanic breccia and generally by a tuffaceous rock . Gundul Formation : This Formation comprises an inter - bedded sequence of sandstone , shale and conglomerate . Sandstone is the most dominant of the three and conglomerate ...
... places by volcanic breccia and generally by a tuffaceous rock . Gundul Formation : This Formation comprises an inter - bedded sequence of sandstone , shale and conglomerate . Sandstone is the most dominant of the three and conglomerate ...
Page 30
... places showing micropegmatitic inter- growth with plagioclase ( labrodorite ) . Iron oxides ( magnetite and ilmenite , at places altered to leucoxene ) occur as granular aggregates and also within the groundmass . The rock shows ...
... places showing micropegmatitic inter- growth with plagioclase ( labrodorite ) . Iron oxides ( magnetite and ilmenite , at places altered to leucoxene ) occur as granular aggregates and also within the groundmass . The rock shows ...
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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Common terms and phrases
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