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 60
... length of 200 m and 400 m . The gold mineralisation is hosted by quartz - carbonate veins and veinlets , having pyrite , pyrrhotite and arsenopyrite dissemination within carbon phyllite , metabasalt and its sheared contact . Five ...
... length of 200 m and 400 m . The gold mineralisation is hosted by quartz - carbonate veins and veinlets , having pyrite , pyrrhotite and arsenopyrite dissemination within carbon phyllite , metabasalt and its sheared contact . Five ...
Page 71
... length , with 2 to 8 m width , trending N25 ° W / 40 ° to 70 ° dipping easterly . The band at places is highly oxidised , altered , magnetite rich , lateritised and contains minor sulphides like pyrite , pyrrhotite , chalcopyrite and ...
... length , with 2 to 8 m width , trending N25 ° W / 40 ° to 70 ° dipping easterly . The band at places is highly oxidised , altered , magnetite rich , lateritised and contains minor sulphides like pyrite , pyrrhotite , chalcopyrite and ...
Page 224
... length is also to be increased 40 to 50m towards the left flank , to abut the dam in the fresh rock . The 3600m long and 4m diameter power tunnel for the Achankoil HE Scheme is aligned in N- S direction with a kink at 2.8km distance ...
... length is also to be increased 40 to 50m towards the left flank , to abut the dam in the fresh rock . The 3600m long and 4m diameter power tunnel for the Achankoil HE Scheme is aligned in N- S direction with a kink at 2.8km distance ...
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