Records of the Geological Survey of India, Volume 123, Part 5The Survey, 1988 - 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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... shear zone are retrograded to amphibolite facies gneissic rocks due to migmatisation and are affected by polyphase deformation . The studies revealed that the E - W trending shears are later to NNE - SSW trending shear zone . The Gangavalli ...
... shear zone are retrograded to amphibolite facies gneissic rocks due to migmatisation and are affected by polyphase deformation . The studies revealed that the E - W trending shears are later to NNE - SSW trending shear zone . The Gangavalli ...
Page 138
... shear zones , viz , the Kottappatti shear zone in the west and Gangavalli shear zone in the east . The Ganavalli shear zone is a 100 km long lincament trending NNE - SSW and is characterised by mylonites , phyllonites and cataclasites . The ...
... shear zones , viz , the Kottappatti shear zone in the west and Gangavalli shear zone in the east . The Ganavalli shear zone is a 100 km long lincament trending NNE - SSW and is characterised by mylonites , phyllonites and cataclasites . The ...
Page 139
... shear zone swerves to N - S as it enters the Kalrayan hills north of the Attur valley . The intensity of the mylonitisaion is more in the northern part of the shear zone . Towards south , the intensity of shearing is relatively less and the ...
... shear zone swerves to N - S as it enters the Kalrayan hills north of the Attur valley . The intensity of the mylonitisaion is more in the northern part of the shear zone . Towards south , the intensity of shearing is relatively less and the ...
Contents
Geotechnical studies of the cutoff trench between RD 418 and 918 M PVB Reservoir | 185 |
A geotechnical note of the Pedaballi dam foundations Anantapur district Andhra Pradesh | 191 |
A geotechnical note on the Yeleru Project under construction in East Godavari | 197 |
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Common terms and phrases
alignment alkali feldspar amphibolite ANANTAPUR DISTRICT ANDHRA PRADESH ANDHRA PRADESH CODE Archaean bands basin biotite block boreholes charnockite charnockite gneiss clay coarse-grained conglomerate Cuddapah depth Dharwar dips DISTRICT dolerite dolerite dykes drilled earth dam emplacement enclaves exposed fault feldspar field season flank folds foliation Formation fractured fresh rock g/t gold gabbro garnetiferous GEOLOGICAL MAP geophysical GEOTECHNICAL gneiss Gondwana granite granite gneiss granitoids granodiorite granulite grey granite grouting hornblende indicated intrusive joints KARNATAKA KERALA kimberlite laterite limestone lithounits located lode magnetite metabasalt metabasite migmatite mineralised zone minerals NE-SW NW-SE occur overburden pediplain pegmatite Peninsular Gneissic Complex phyllites pink granite plagioclase power house pyrite pyroxenite quartz quartz veins quartzite river rock types samples sandstone scale schist schist belt sediments shear zone soil spillway sq km strike length studies sulphide surface surveys syenite TAMIL NADU thickness tonalite Toposheet traversed trench trending tunnel ultramafic upto weathered width