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 98
... basins based on their geographic distribution , namely Tiruchirapalli Sub - basin around Ariyalur area in the south , extending towards north up to Vellar River , Vriddhachalam Sub - basin in the central part extending between Vellar ...
... basins based on their geographic distribution , namely Tiruchirapalli Sub - basin around Ariyalur area in the south , extending towards north up to Vellar River , Vriddhachalam Sub - basin in the central part extending between Vellar ...
Page 198
... basin in view of closely jointed and sheared rock to protect from scouring in the vicinity of the stilling basin . Weathering is found to be deeper ( about 10m ) along the zone at downstream of third vent of glacis spillway and ogee ...
... basin in view of closely jointed and sheared rock to protect from scouring in the vicinity of the stilling basin . Weathering is found to be deeper ( about 10m ) along the zone at downstream of third vent of glacis spillway and ogee ...
Page 256
... basin varying from ENE - WSW to NE - SW . The change in gravity gradients along the ' low ' axis indicates undulations with in the basin . Discontinuities observed in the form of discrete closures of anomalies over the gravity high and ...
... basin varying from ENE - WSW to NE - SW . The change in gravity gradients along the ' low ' axis indicates undulations with in the basin . Discontinuities observed in the form of discrete closures of anomalies over the gravity high and ...
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