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 53
... granitoids of the area are grouped into 1 ) gneissic rocks , 2 ) hornblende- bearing granitoids and 3 ) granites ( s.s. ) . The gneisses are bimodal in composition , made up mainly of felsic gneisses alternating with linear and ...
... granitoids of the area are grouped into 1 ) gneissic rocks , 2 ) hornblende- bearing granitoids and 3 ) granites ( s.s. ) . The gneisses are bimodal in composition , made up mainly of felsic gneisses alternating with linear and ...
Page 29
... granitoids have been eroded down . The dykes are mostly NNW - SSe to NNE - SSE , have width ranging from couple of cm to as much as 100 - 125m and length ranging from a metre to more than a km . The dykes are mostly of doleritic ...
... granitoids have been eroded down . The dykes are mostly NNW - SSe to NNE - SSE , have width ranging from couple of cm to as much as 100 - 125m and length ranging from a metre to more than a km . The dykes are mostly of doleritic ...
Page 214
... granitoids are commonly porphyritic , coarse to medium grained and are of granite and rarely of quartz - tonalite composition . They contain micro - gabbroid and microgranitic enclaves . They lack pegmatite and aplite veins . The granitoids ...
... granitoids are commonly porphyritic , coarse to medium grained and are of granite and rarely of quartz - tonalite composition . They contain micro - gabbroid and microgranitic enclaves . They lack pegmatite and aplite veins . The granitoids ...
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