Records of the Geological Survey of India, Volume 124, Part 5The Survey, 1991 - 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 216
... magnetic surveys delineated a magnetic ' low ' zone of 150 m width over a strike length of 900 m suggestive of shearing within the metabasalts at depth . Three isolated mag- netic closures corroborated by EM ' poor ' conductor ...
... magnetic surveys delineated a magnetic ' low ' zone of 150 m width over a strike length of 900 m suggestive of shearing within the metabasalts at depth . Three isolated mag- netic closures corroborated by EM ' poor ' conductor ...
Page 226
... Magnetic susceptibility measurements were taken in the field in a systematic grid pattern to map the areas having pockets of magnetite / pyrrhotite contents which could not be brought out well in magnetic surveys due to the inherent ...
... Magnetic susceptibility measurements were taken in the field in a systematic grid pattern to map the areas having pockets of magnetite / pyrrhotite contents which could not be brought out well in magnetic surveys due to the inherent ...
Page 228
... magnetic ( VF ) supplemented by EM ( Slingram ) methods were conducted in the area to confirm and trace the inferred faults / shears . Resistivity profiling ( Gradient array for C1C2 = 1,000m and P1P2 = 20 & 40 m ) was carried out over ...
... magnetic ( VF ) supplemented by EM ( Slingram ) methods were conducted in the area to confirm and trace the inferred faults / shears . Resistivity profiling ( Gradient array for C1C2 = 1,000m and P1P2 = 20 & 40 m ) was carried out over ...
Contents
Andhra Pradesh | 11 |
Karnataka and Goa | 61 |
Tamil Nadu Kerala | 109 |
Copyright | |
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alkali feldspar granite amphibolite ANDHRA PRADESH ANDHRA PRADESH Code anomaly zones banded iron formation basin biotite block boreholes carried channel charnockite Chitradurga chlorite clay coarse-grained comprising depth Dharwar dips DISTRICT dolerite drilling emplaced enclaves exposed feldspar field season fluvial foliation Formation gabbro geochemical GEOLOGICAL MAP GEOPHYSICAL gneiss gold values granite granite gneiss granitoids gravel grey granite hornblende INDEX indicated intersected intrusives INVESTIGATION FOR GOLD joints KARNATAKA KARNATAKA Code KERALA kimberlite Krishna landforms lateritic lignite limestone located lode magnetic magnetite metabasalt migmatites mineralised zone NW-SE occur palaeochannel Palar pediplain pegmatite Peninsular Gneissic Complex phyllite pink granite Plate-2 pyroxenite quartz quartz veins quartzite Quaternary reservoir river rock types samples sand scale schist belt schistose shale shear slopes soil sq km strike length studies sulphide mineralisation surface surveys syenite TAMIL NADU terrace thick tonalite traverse trench trending ultramafic upto vertical volcanics width