Records of the Geological Survey of India, Volume 139, Part 5The Survey, 2006 - 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 45
... granite ( Closepet Granite ) body in the western part of the area . The porphyritic granites occur as linear bodies in massive granite . These rocks are coarse grained and porphyritic with large feldspar crystals in medium to coarse ...
... granite ( Closepet Granite ) body in the western part of the area . The porphyritic granites occur as linear bodies in massive granite . These rocks are coarse grained and porphyritic with large feldspar crystals in medium to coarse ...
Page 89
... granite gneiss in the extreme east and the granodiorite gneiss with amphibolite facies schistose enclaves in the west lies a NE - SW trending shear zone of about 4-5km width , characterized by emplacement of alkali granite , syenite ...
... granite gneiss in the extreme east and the granodiorite gneiss with amphibolite facies schistose enclaves in the west lies a NE - SW trending shear zone of about 4-5km width , characterized by emplacement of alkali granite , syenite ...
Page 171
... granite belonging to Peninsular Gneissic Complex of Archaean age is the rock type at the project site . Granite is intruded by a number of dolerite dykes and pegmatite veins of varying dimensions . Gneissosity in granite is ...
... granite belonging to Peninsular Gneissic Complex of Archaean age is the rock type at the project site . Granite is intruded by a number of dolerite dykes and pegmatite veins of varying dimensions . Gneissosity in granite is ...
Contents
ANDHRA PRADESH | 1 |
Quaternary Geology | 9 |
Project National Geochemica Mapping NGCM | 16 |
Copyright | |
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abutment alignment amphibolite Andhra Pradesh assess bands basin bed rock biotite biotite gneiss block boreholes carried charnockite coast cut-off trench depth district dolerite drilled dunes dyke earth dam enclaves excavation exposed field season folds foliation Formation foundation fresh rock garnet Geochemical Mapping geological mapping GEOTECHNICAL INVESTIGATION gneiss gold grained granite granite gneiss granitoids granodiorite granulite gravity grouting holes hornblende indicated intrusive Item joints Karnataka Kerala Khondalite kimberlite laterite limestone lithounits located lugeons mafic metabasalt migmatite mineralisation minerals moderate mylonite NNW-SSE NW-SE occur overburden pegmatite penstock permeability tests phyllite powerhouse project authorities proposed pyroxene quartz quartz veins quartzite reservoir river samples were collected sand schist belt shale shear zone shotcrete slope soil Specialised Thematic Mapping spillway STAGE GEOTECHNICAL stream sediment samples strike structure studies sulphide surface Tamil Nadu thick toposheet traverse trending tsunami ultramafic upto values varying vertical weathered weir width