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 80
... seen in the Tank block . The regional trend of the formations varies from N75 ° W - S75 ° E to E - W with steep dips towards north . The rocks in the area have undergone three phases of deformation . The 1st generation defor- mation has ...
... seen in the Tank block . The regional trend of the formations varies from N75 ° W - S75 ° E to E - W with steep dips towards north . The rocks in the area have undergone three phases of deformation . The 1st generation defor- mation has ...
Page 81
... seen just adjacent to the main BIF band . These rocks were traversed by both concordant and discordant ba- sic ... seen to have 180 m to 360 m strike length . Apart from these bands , a few small lenses of BIF are also seen in the ...
... seen just adjacent to the main BIF band . These rocks were traversed by both concordant and discordant ba- sic ... seen to have 180 m to 360 m strike length . Apart from these bands , a few small lenses of BIF are also seen in the ...
Page 110
... seen 500m NE of Sangalpatti . Under microscope , it consists of hypersthene , enstatite , agaerine augite and plagioclase ( bytownite ) . Biotite is seen as an ac- cessory . The charnockite in the area forms the major rock unit . At ...
... seen 500m NE of Sangalpatti . Under microscope , it consists of hypersthene , enstatite , agaerine augite and plagioclase ( bytownite ) . Biotite is seen as an ac- cessory . The charnockite in the area forms the major rock unit . At ...
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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