Records of the Geological Survey of India, Volume 129, Part 5Government of India, 1994 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 119
... rock types for PGE analyses . Strike mapping of 80 1 km was carried out in the Torappadi - Ponakkadu area . The rock types exposed include pyroxenite ( diopsidite and bronzitite ) al- tered ultramafic rock ( dunite / peridotite ? ) with ...
... rock types for PGE analyses . Strike mapping of 80 1 km was carried out in the Torappadi - Ponakkadu area . The rock types exposed include pyroxenite ( diopsidite and bronzitite ) al- tered ultramafic rock ( dunite / peridotite ? ) with ...
Page 151
... rock column of about 8 m thickness above it on the hanging wall side . As sufficient rock column is available above the sheared and weathered zone to support the structure , it was opened that further deepening may not be required and ...
... rock column of about 8 m thickness above it on the hanging wall side . As sufficient rock column is available above the sheared and weathered zone to support the structure , it was opened that further deepening may not be required and ...
Page 194
... rock mass may slide along this weak zone and would lead to reduction in rock cover over the tunnel crown , 3 holes were drilled to evaluate the behaviour of the above weak zone . Although the weathered and pegmatite vein was met in two ...
... rock mass may slide along this weak zone and would lead to reduction in rock cover over the tunnel crown , 3 holes were drilled to evaluate the behaviour of the above weak zone . Although the weathered and pegmatite vein was met in two ...
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Common terms and phrases
acid volcanics amphibolite ANANTAPUR DISTRICT ANDHRA PRADESH anomaly zones anorthosite assessment auriferous banded iron formation beach ridges bedrock beds BIF bands biotite biotite gneiss block boreholes carried charnockite chert Chitradurga clay delineated deposits depth Dharwar dips dolerite drilling dykes east eastern emplaced ENE-WSW excavated exposed field season folds foliation foundation gabbro geochemical GEOLOGICAL MAP geophysical geotechnical investigations gneiss Gneissic gold mineralisation granite gneiss granulite gravity grey grout hornblende INDEX indicated intrusives joints KARNATAKA KERALA kimberlite laterite lignite limestone lineament located mafic magnetic metabasalt migmatites mineral mineralised zones NE-SW NNW-SSE NW-SE occur overburden pegmatite Plate power house PROJECT pyrite quartz quartz veins quartzite regional reservoir river rock types samples scale schist belt schistose sediments shear zone slope soil southern spillway sq km strike length structural studies sulphides surveys TAMIL NADU thickness traversed trenching trending tunnel ultramafic upto vertical weathered width