Journal ArticleDOI
Archean tectonics and crustal evolution of the Biligiri Rangan Block, southern India
R.T. Ratheesh-Kumar,M. Santosh,M. Santosh,Qiong-Yan Yang,Qiong-Yan Yang,C. Ishwar-Kumar,Nengsong Chen,Krishnan Sajeev +7 more
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TLDR
In this article, the authors investigate the tectonic evolution of one of the northernmost block- the Biligiri Block (BRB) through a multidisciplinary approach involving field investigation, petrographic studies, LA-ICPMS zircon U-Pb geochronology, Hf isotopic analyses, metamorphic P-T phase diagram computations, and crustal thickness modeling.About:
This article is published in Precambrian Research.The article was published on 2016-04-01. It has received 37 citations till now. The article focuses on the topics: Dharwar Craton & Continental crust.read more
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Formation of Archean (3600-2500 Ma) continental crust in the Dharwar Craton, southern India
TL;DR: The Dharwar Craton formed by assembly of micro-blocks with independent thermal records and accretionary histories is analyzed in this paper, which provides important insights into building of continents in the Early Earth.
Journal ArticleDOI
Multi-stage crustal growth and Neoarchean geodynamics in the Eastern Dharwar Craton, southern India
Mudlappa Jayananda,K.R. Aadhiseshan,K.R. Aadhiseshan,Monika A. Kusiak,Simon A. Wilde,Kowete-U. Sekhamo,Martin Guitreau,M. Santosh,R.V. Gireesh +8 more
TL;DR: In this paper, a multidisciplinary study involving field investigations, petrology, zircon SHRIMP U-Pb geochronology with in-situ Hf isotope analyses, and whole-rock geochemistry, including Nd isotope data on migmatitic TTG (tonalite-trondhjemite-granodiorite), dark grey banded gneisses, calc-alkaline and anatectic granitoids, together with synplutonic mafic dykes along a wide Northwest- Southeast
Journal ArticleDOI
Metamorphism during the Archean–Paleoproterozoic Transition Associated with Microblock Amalgamation in the Dharwar Craton, India
TL;DR: Recently, a previously unrecognized central Dharwar Craton block (Central-Dharwar-Craton; CDC) within the craton has been revealed as mentioned in this paper, which requires revision of this model and reinterpretation of metamorphic and magmatic age data.
Journal ArticleDOI
Paleoarchean and Neoarchean Tonalite–Trondhjemite–Granodiorite (TTG) and granite magmatism in the Western Dharwar Craton, southern India: Implications for Archean continental growth and geodynamics
TL;DR: The Western Dharwar Craton in southern India is underlain by Paleo-Archean to Neo-archean granitoids as discussed by the authors, which were derived from basaltic protoliths with minor components sourced from pre-existing felsic crust.
Journal ArticleDOI
Neoarchean microblock amalgamation in southern India: Evidence from the Nallamalai Suture Zone
Shan-Shan Li,M. Santosh,M. Santosh,Sohini Ganguly,P.V. Thanooja,Krishnan Sajeev,Arijit Pahari,C. Manikyamba +7 more
TL;DR: In this article, the authors investigated the tectonic boundary between two of these microblocks, the Shevaroy Block to the west and the Madras Block to east, termed as the Nallamalai Suture Zone (NLSZ), and presented integrated field, petrological, geochemical and zircon U-Pb and Lu-Hf data from a suite of meta-igneous and metasedimentary units along the NLSZ and its flanks.
References
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Journal ArticleDOI
An internally consistent thermodynamic data set for phases of petrological interest
TL;DR: In this paper, the thermodynamic properties of 154 mineral endmembers, 13 silicate liquid end-members and 22 aqueous fluid species are presented in a revised and updated data set.
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Correction of common lead in U-Pb analyses that do not report 204Pb
TL;DR: In this article, the authors proposed a correction method that neither uses 204Pb nor assumes concordance, but uses a numeric solution to a set of equations relating the content of radiogenic lead in a zircon or other U/Th-enriched mineral to its total lead content.
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Nomenclature of amphiboles Report of the Subcommittee on Amphiboles of the International Mineralogical Association Commission on New Minerals and Mineral Names;Nomenclature of amphiboles Report of the Subcommittee on Amphiboles of the International Mineralogical Association Commission on New Minerals and Mineral Names
Bernard Elgey Leake,Alan R. Woolley,C. E. S. Arps,William D. Birch,M. C. Gilbert,Joel D. Grice,Ec. Hawthorne,A. Kato,Hanan J. Kisch,V. G. Krivovichev,K. Linthout,J. Laird,Joseph A. Mandarino,W. V. Maresch,Ernest H. Nickel,N. M. S. Rock,John C. Schumacher,D. C. Smith,Nicholas C.N. Stephenson,Luciano Ungaretti,Eric J.W. Whittaker,G. Youzhi +21 more
TL;DR: The International Mineralogical Association's approved amphibole nomenclature has been revised to simplify it, make it more consistent with divisions generally at 50%, define prefixes and modifiers more precisely, and include new amphibole species discovered and named since 1978, when the previous scheme was approved.
Journal ArticleDOI
Nomenclature of amphiboles; report of the subcommittee on amphiboles of the International Mineralogical Association, Commission on New Minerals and Mineral Names
TL;DR: The International Mineralogical Association's approved amphibole nomenclature has been revised to simplify it, make it more consistent with divisions generally at 50%, define prefixes and modifiers more precisely, and include new amphibole species discovered and named since 1978, when the previous scheme was approved.
Journal ArticleDOI
The Hf isotope composition of cratonic mantle: LAM-MC-ICPMS analysis of zircon megacrysts in kimberlites
William L. Griffin,William L. Griffin,Norman J. Pearson,Elena Belousova,Simon E. Jackson,E. van Achterbergh,Suzanne Y. O'Reilly,S. R. Shee +7 more
TL;DR: In this article, the isotopic composition of Hf has been measured in 124 mantle-derived zircon megacrysts from African, Siberian and Australian kimberlites, using a laser-ablation microprobe (LAM) and a multi-collector ICPMS.