GABBROIC ANORTHOSITES FROM KOTAGIRI, NILGIRI HILLS, TAMIL NADU

Field, petrographic and geochemical characters of new occurrence of gabbroic anorthosites around Kotagiri indicate that they are of Archaean age and define ancient lineament. The rocks have suffered granulite facies metamorphism (820°C/7kb) at 2.6 Ga.

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Published in:Current science (Bangalore) 1986-09, Vol.55 (18), p.896-898
Main Authors: SRIKANTAPPA, C., ASHAMANJARI, K. G., JANARDHAN, A. S.
Format: Article
Language:English
Subjects:
Anorthosite
Chemical analysis
Crystalline rocks
Earth sciences
Earth, ocean, space
Exact sciences and technology
Garnets
Geochemistry
Igneous and metamorphic rocks petrology, volcanic processes, magmas
Metamorphism
Minerals
Plagioclase
Rocks
Soil and rock geochemistry
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container_issue 18
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container_title Current science (Bangalore)
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creator SRIKANTAPPA, C.
ASHAMANJARI, K. G.
JANARDHAN, A. S.
description Field, petrographic and geochemical characters of new occurrence of gabbroic anorthosites around Kotagiri indicate that they are of Archaean age and define ancient lineament. The rocks have suffered granulite facies metamorphism (820°C/7kb) at 2.6 Ga.
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source JSTOR
subjects Anorthosite
Chemical analysis
Crystalline rocks
Earth sciences
Earth, ocean, space
Exact sciences and technology
Garnets
Geochemistry
Igneous and metamorphic rocks petrology, volcanic processes, magmas
Metamorphism
Minerals
Plagioclase
Rocks
Soil and rock geochemistry
title GABBROIC ANORTHOSITES FROM KOTAGIRI, NILGIRI HILLS, TAMIL NADU
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