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 6
... structures . The orbicular structure has a nucleus of sphene surrounded by plagioclase - quartz shell . The development of these structures may be related to magma mixing process . Granite with sub equal amounts of plagioclase , potash ...
... structures . The orbicular structure has a nucleus of sphene surrounded by plagioclase - quartz shell . The development of these structures may be related to magma mixing process . Granite with sub equal amounts of plagioclase , potash ...
Page 199
... structure . No outcrops have been observed in the vicinity of the dam , only downstream of the right earthern section , outcrops of charnockite and migmatite were observed . The foliation trends in N 85 ° E to E to S 85 ° W to W and dip ...
... structure . No outcrops have been observed in the vicinity of the dam , only downstream of the right earthern section , outcrops of charnockite and migmatite were observed . The foliation trends in N 85 ° E to E to S 85 ° W to W and dip ...
Page 201
... structure , thin quartz and pegmatite veins were observed in the country rock . In the dumped material of the left abutment , pseudo tachylite materials have been observed . It indicates that in the foundation media there may be small ...
... structure , thin quartz and pegmatite veins were observed in the country rock . In the dumped material of the left abutment , pseudo tachylite materials have been observed . It indicates that in the foundation media there may be small ...
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