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The Kerala Khondalite Belt (KKB) of Southern India: An ensialic mobile beltThe Proterozoic Kerala Khondalite belt of the Southern Indian Shield is described, a belt dominated by granulite grade (750 C, 5 to 6 kbar) supracrustal rocks whose protoliths included arkoses and shales with cratonic provenances. Rare earth elements and other geochemical signatures suggest a granitic source for these metasediments, possibly the spatially associated charnockite massifs. The presence of intercalated mafic gneisses, interpreted as basalts, implies a cratonic rift basin rather than a foreland basin setting. It was argued that the Kerala, as well as other early Proterozoic mobile belts formed during abortive continental rifting without major additions of new crust.
Document ID
19880020824
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chacko, Thomas (North Carolina Univ. Chapel Hill., United States)
Meen, James K. (North Carolina Univ. Chapel Hill., United States)
Kumar, G. R. Ravindra (Centre for Earth Science Studies Trivandrum, India)
Rogers, John J. W. (North Carolina Univ. Chapel Hill, NC, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Lunar and Planetary Inst., Workshop on the Growth of Continental Crust
Subject Category
Geophysics
Accession Number
88N30208
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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