Records of the Geological Survey of India, Volume 123, Part 5The Survey, 1990 - 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 44
... feldspar granite were met with in the area mapped . Eastern part of the area is marked by low level plain land characterised by granite gneisses whereas very coarse - grained to por- phyroblastic alkali feldspar granite is characterised ...
... feldspar granite were met with in the area mapped . Eastern part of the area is marked by low level plain land characterised by granite gneisses whereas very coarse - grained to por- phyroblastic alkali feldspar granite is characterised ...
Contents
Quaternary geology and geomorphology of the Coastal tracts | 1 |
Geology of Peninsular Gneissic Complex around Narasampet in Warangal district Andhra Pradesh | 8 |
Geology of Peninsular Gneissic Complex in parts of Jangaon and Aler area | 15 |
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Common terms and phrases
alignment amphibolite ANDHRA PRADESH ANDHRA PRADESH CODE Archaean axis bands basin bedrock biotite block boreholes boreholes drilled canal charnockite charnockite gneiss clay coarse-grained current field season cut-off trench depth dips DISTRICT dolerite dolerite dykes earth dam enclaves excavated exposed fault feldspar folds foliation Formation foundation fractured fresh rock g/t gold Gangavalli garnetiferous GEOLOGICAL MAP GEOTECHNICAL gneiss Gondwana granite granitoids granodiorite granulite grey granite grouting holes hornblende indicated intrusive joints KARNATAKA KERALA kimberlite km long laterite left flank limestone located massive METRES migmatite mineralised zone nala NE-SW NNE-SSW NW-SE occur pegmatite pegmatoidal phyllites pink granite power house proposed pyrite pyroxenite quartz quartz veins quartzite reservoir river rock types samples sandstone scale SCHEME schist schist belt sediments shaft shale soil spillway sq km STRIKE AND DIP strike length studies sulphide surface syenite TAMIL NADU traversed trending tunnel upto varies vertical width