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
... places magmatic and mylonitic foliations are seen . The ground mass - phenocryst ratio varies from 60-40 to even 90-10 . The most abundant rock type is the grey massive granite , whereas the pink massive granite is associated with the ...
... places magmatic and mylonitic foliations are seen . The ground mass - phenocryst ratio varies from 60-40 to even 90-10 . The most abundant rock type is the grey massive granite , whereas the pink massive granite is associated with the ...
Page 71
... places is highly oxidised , altered , magnetite rich , lateritised and contains minor sulphides like pyrite , pyrrhotite , chalcopyrite and dissemination of arsenopyrite . This BMQ band grades in to Mn phyllite . West of Dandeli in ...
... places is highly oxidised , altered , magnetite rich , lateritised and contains minor sulphides like pyrite , pyrrhotite , chalcopyrite and dissemination of arsenopyrite . This BMQ band grades in to Mn phyllite . West of Dandeli in ...
Page 86
... places . The area had undergone three phase of folding F1 , F2 and F3 and had been subjected to faulting along NE - SW and NW - SE directions . A number of shears also had affected the area . The younger intrusives such as anorthosite ...
... places . The area had undergone three phase of folding F1 , F2 and F3 and had been subjected to faulting along NE - SW and NW - SE directions . A number of shears also had affected the area . The younger intrusives such as anorthosite ...
Contents
ANDHRA PRADESH | 1 |
Quaternary Geology | 9 |
Project National Geochemica Mapping NGCM | 16 |
Copyright | |
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Common terms and phrases
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