Records of the Geological Survey of India, Volume 126, Parts 4-6The Survey, 1993 - 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 50
... massive part is fine to medium grained and aphyric . I ' aa ' 30 m The middle massive part of the flows are aphyric to sparsely porphyritic in nature . Under microscope , Plagioclase , clinopyroxene and / or olivine constitute the ...
... massive part is fine to medium grained and aphyric . I ' aa ' 30 m The middle massive part of the flows are aphyric to sparsely porphyritic in nature . Under microscope , Plagioclase , clinopyroxene and / or olivine constitute the ...
Page 51
... massive part is dark grey , fine grained and sparsely to moderately porphyritic . Contact at 685 to 700 m above M.S.L. impersistent red bole 60 m Fragmentary top upto 15 m . Middle massive part is dark grey , fine grained and very ...
... massive part is dark grey , fine grained and sparsely to moderately porphyritic . Contact at 685 to 700 m above M.S.L. impersistent red bole 60 m Fragmentary top upto 15 m . Middle massive part is dark grey , fine grained and very ...
Page 263
... massive rhyodacitic lavas and the youngest rhyolitic to decitic dykes that form the circular / ring like structure . Petro - graphically the pyroclastics are fine grained ( 0.02mm ) with xenocrysts of quartz , k feldspar and albitic ...
... massive rhyodacitic lavas and the youngest rhyolitic to decitic dykes that form the circular / ring like structure . Petro - graphically the pyroclastics are fine grained ( 0.02mm ) with xenocrysts of quartz , k feldspar and albitic ...
Contents
Arunachal Pradesh | 1 |
Mineral InvestigationII Arunachal Pradesh | 9 |
Geology of parts of Karbi Anglong North Cachar Hills and Nowgaon | 15 |
Copyright | |
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acid amphibolite ANDHRA PRADESH bands basalt biotite biotite gneiss block boreholes charnockite chert complex dam axis Deccan Trap depth DISTRICT dolerite dolomite drilling enclaves ENE-WSW Engineering Geology Division exposed feldspar field season flows folds foliation Formation gabbro geochemical GEOLOGICAL MAP Geophysical GEOTECHNICAL INVESTIGATIONS gneiss gneissic gold grained granite granite gneiss granitoids granulite grey Group hornblende INDEX indicated intrusives joints KARNATAKA kimberlite limestone lineament located mafic magnetic magnetite Maharashtra metabasalt migmatite mineral mineralised zone Nagpur Narmada NE-SW NNE-SSW NNW-SSE NW-SE occur pegmatite pink granite plagioclase porphyritic power house PRADESH Code pyrite pyroxene pyroxenite quartz quartz veins quartzite Regional Geology Division reservoir rhyolite river Sakoli samples sandstone scale schist schist belt schistose sediments shale shear zone slope soil Sp Sp spillway sq km strike length structures studies sulphide surveys syenite thick toposheet traverses trench trending tunnel ultramafic upto valley volcanics width Δ Δ Δ