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 53
... shear zone from Besagarahalli to Shivasamudram passes through the gneisses up to the contact of high grade terrain ( northeast of Kollegal ) . This major strike slip sinistral shear zone with a width varying from 3 to 4km , continues up ...
... shear zone from Besagarahalli to Shivasamudram passes through the gneisses up to the contact of high grade terrain ( northeast of Kollegal ) . This major strike slip sinistral shear zone with a width varying from 3 to 4km , continues up ...
Page 54
... shear zone show that the prominent mylonitic foliation ( C ) is defined by ribbon quartz , augen feldspar , sub - horizontal stretching lineation , shear bands , shear lenses , winged porphyroclasts and presence of pseudotachyllite and ...
... shear zone show that the prominent mylonitic foliation ( C ) is defined by ribbon quartz , augen feldspar , sub - horizontal stretching lineation , shear bands , shear lenses , winged porphyroclasts and presence of pseudotachyllite and ...
Page 104
... shear zone are noted . Intense fracturing and development of gash fractures in the adjacent foot wall as well as in the hanging wall zones and emplacement of quartz veins in the same are seen in the shear zones . The shear fractures and ...
... shear zone are noted . Intense fracturing and development of gash fractures in the adjacent foot wall as well as in the hanging wall zones and emplacement of quartz veins in the same are seen in the shear zones . The shear fractures 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