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 33
... quartz veins represent the youngest intrusive activity . The rocks are folded into NW - SE trending overturned isoclinal syncline plunging gently towards NW with axial plane dipping moderately towards NE . The rocks are refolded into ...
... quartz veins represent the youngest intrusive activity . The rocks are folded into NW - SE trending overturned isoclinal syncline plunging gently towards NW with axial plane dipping moderately towards NE . The rocks are refolded into ...
Page 77
... quartz veins were mapped . A common feature to these quartz - veins is that , all of them are within granitic country very close to the schist belt . The quartz is mostly impure , ferruginous , at places brecciated and limonitised ...
... quartz veins were mapped . A common feature to these quartz - veins is that , all of them are within granitic country very close to the schist belt . The quartz is mostly impure , ferruginous , at places brecciated and limonitised ...
Page 102
... quartz veins occur in the area . A few veins show wall rock alteration , such as , sericitisation and chloritisa- tion with stains of malachite , at places . Quartz veins found within the amphibolite are white to grey , thin , lensoidal ...
... quartz veins occur in the area . A few veins show wall rock alteration , such as , sericitisation and chloritisa- tion with stains of malachite , at places . Quartz veins found within the amphibolite are white to grey , thin , lensoidal ...
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