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Low pressure granulite facies sukma supracrustal rocks near Nagaras, southern Bastar craton

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Title Low pressure granulite facies sukma supracrustal rocks near Nagaras, southern Bastar craton
 
Creator THAKUR, SS
PATEL, SC
 
Subject cummingtonite
cordierite
granulite
bastar craton
 
Description This communication discusses the metamorphism of low pressure granulites in the Sukma supracrustal suite near Nagaras in the southern Bastar craton. The area shows occurrence of Mg-Al rocks,of both amphibolite and granulite facies. Amphibolite facies Mg-Al schist usually contains cordierite and, a low-Ca amphibole, which is commonly cummingtonite and rarely gedrite. Low-Ca amphibole and sillimanite are never found together in the same rock. Mg-Al granulite is characterised by the presence of orthopyroxene in lieu of low-Ca amphibole. Most of the Mg-Al rocks are silica saturated.
 
Publisher GEOLOGICAL SOC INDIA
 
Date 2011-07-30T05:18:01Z
2011-12-26T12:52:40Z
2011-12-27T05:39:23Z
2011-07-30T05:18:01Z
2011-12-26T12:52:40Z
2011-12-27T05:39:23Z
2007
 
Type Article
 
Identifier JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA, 69(1), 75-79
0016-7622
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7859
http://hdl.handle.net/10054/7859
 
Language en