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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Page 13
... feldspar , plagioclase , biotite , hornblende , chlorite , etc . , and sometimes arranged in the direction parallel to the crude foliation of the enclosing granitoid rocks . Plagioclase in the granitoid rocks is mostly of oli- gioclase ...
... feldspar , plagioclase , biotite , hornblende , chlorite , etc . , and sometimes arranged in the direction parallel to the crude foliation of the enclosing granitoid rocks . Plagioclase in the granitoid rocks is mostly of oli- gioclase ...
Page 31
... feldspar ( mostly orthoclase perthite ) occurs as euhedral to subhedral laths of one to five centimetres long and is invariably characterised by carlsbad twinning . The feldspars , at places , do show preferred alignment conformable to ...
... feldspar ( mostly orthoclase perthite ) occurs as euhedral to subhedral laths of one to five centimetres long and is invariably characterised by carlsbad twinning . The feldspars , at places , do show preferred alignment conformable to ...
Page 326
... feldspar ( oligoclase - andesine ) is invariably highly saussuri- tised whereas the potash feldspars , particularly microcline , are very fresh . The contact between G - 1 and G - 2 granitoid is gradational as well as sharp . The sharp ...
... feldspar ( oligoclase - andesine ) is invariably highly saussuri- tised whereas the potash feldspars , particularly microcline , are very fresh . The contact between G - 1 and G - 2 granitoid is gradational as well as sharp . The sharp ...
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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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