Records of the Geological Survey of India, Volume 122, Part 5The Survey, 1987 - 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 74
... trench samples in this mineralised zone analysed gold values consistently in the range of 0.2 to 0.54 g / t . One trench sample collected from altered quartzofeldspathic schist with granite veins analysed 2.7 g / t of gold over a ...
... trench samples in this mineralised zone analysed gold values consistently in the range of 0.2 to 0.54 g / t . One trench sample collected from altered quartzofeldspathic schist with granite veins analysed 2.7 g / t of gold over a ...
Page 179
... trenches . The trench put down in Rayarpatti over a soil anomly point indicated only very weak mineralisation ( upto 200 ppm W ) . Trenching carried out in the Pallakudi tank ( located north of the Somagiri prospect ) has exposed ...
... trenches . The trench put down in Rayarpatti over a soil anomly point indicated only very weak mineralisation ( upto 200 ppm W ) . Trenching carried out in the Pallakudi tank ( located north of the Somagiri prospect ) has exposed ...
Page 8
... Trenches put down over some of the anomaly zones have exposed grey quartz veins , ankerite and sometimes white powdery carbonate . Some trench samples have given encouraging assay values for gold . In Maski block , the occurrence of ...
... Trenches put down over some of the anomaly zones have exposed grey quartz veins , ankerite and sometimes white powdery carbonate . Some trench samples have given encouraging assay values for gold . In Maski block , the occurrence of ...
Contents
Quaternary Geology and Geomorphology of the Coastal Tracts in East Godavari District | 3 |
Quaternary Geology and Geomorphology of the Coastal Tracts in parts of Nellore District | 11 |
Quaternary Geology and Geomorphology of the Coastal Tracts of Srikakulam Vizianagaram and Visakhapatnam Districts | 19 |
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amphibolite ANANTAPUR DISTRICT ANDHRA PRADESH ANDHRA PRADESH Code anomaly anorthosite Archaean axis bands bed rock biotite biotite granite block boreholes boreholes drilled charnockite charnockite gneiss clay comprises conglomerate dam alignment Deccan Trap depth Dharwar dips DISTRICT dolerite dolerite dykes earth dam enclaves excavated exposed fluvial folds foliation formation foundation fresh rock gabbro GEOLOGICAL MAP GEOPHYSICAL GEOTECHNICAL gneiss Godavari granite granite gneiss granodiorite granulite grey indicated intrusives investigation joints KARNATAKA KERALA landforms laterite left flank limestone located lode magnetite metabasalt metres migmatite NNW-SSE NW-SE occur overburden pegmatite Peninsular gneiss phyllite pink granite PLATE power house PROJECT proposed quartz quartz veins quartzite Raichur reservoir ridge right flank river bed rock types samples sand sandstone scale schist schist belt schistose sediments shale shear zone soil spillway sq km strike length studies suggested Supergroup surface TALUK TAMIL NADU thickness toposheet traversed trench trending ultramafic upto width