Records of the Geological Survey of India, Volume 126, Issues 5-6Vols. 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 54
... rock xenoliths such as metabasalt , banded magnetite quartzite and tonalitic / amphibolitic gneisses , all of which occur in proximity with the country rock contact and ( ii ) the igneous enclaves which include microgranitoids and ...
... rock xenoliths such as metabasalt , banded magnetite quartzite and tonalitic / amphibolitic gneisses , all of which occur in proximity with the country rock contact and ( ii ) the igneous enclaves which include microgranitoids and ...
Page 200
... rock . Fresh rock in this reach occurs at depths varying from 6 to 20 m . Between Ch 230 and 480 m , fresh rock might occur at 5 to 6 m depth . The rock is weathered to a maximum depth of 20 m at Ch 100 m as noted in the borehole ...
... rock . Fresh rock in this reach occurs at depths varying from 6 to 20 m . Between Ch 230 and 480 m , fresh rock might occur at 5 to 6 m depth . The rock is weathered to a maximum depth of 20 m at Ch 100 m as noted in the borehole ...
Page 247
... rock is exposed mainly in the river bed section while the flanks are soil covered . Five boreholes were suggested at the weir site to decipher the depth to bed rock and its nature . Preuminary studies indicated that the length of the ...
... rock is exposed mainly in the river bed section while the flanks are soil covered . Five boreholes were suggested at the weir site to decipher the depth to bed rock and its nature . Preuminary studies indicated that the length of the ...
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Common terms and phrases
acid amphibolite ANDHRA PRADESH anomaly zones axis bands basalt basin biotite biotite gneiss block boreholes charnockite complex Deccan Trap deformation depth DISTRICT dolerite drilling enclaves ENE-WSW exposed feldspar field season flows folds foliation Formation gabbro geochemical GEOLOGICAL MAP Geology Division Geophysical GEOTECHNICAL INVESTIGATIONS gneiss gneissic gold grained granite granite gneiss granitoids granulite grey Group hornblende INDEX indicated intrusives joints KARNATAKA kimberlite laterite lava lineament located mafic magnetite MAHARASHTRA metabasalt migmatite mineral mineralised zone Nagpur Narmada NE-SW NNW-SSE NW-SE occur pahoehoe pegmatite pink granite plagioclase porphyritic pyrite pyroxene granulite pyroxenite quartz quartz veins quartzite Quaternary regional reservoir rhyolite river rock types Sakoli samples sandstone scale schist schist belt schistose sediments shale shear zone soil spillway sq km strike length structures studies sulphide surveys syenite TAMIL NADU thick toposheet traversed trench trending tunnel ultramafic upto valley volcanics width