The Proterozoic magmatic and metamorphic history of the Banded Gneiss Complex, central Rajasthan, India: LA-ICP-MS U-Pb zircon contstraints

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dc.contributor.authorBuick, Ian
dc.contributor.authorAllen, Charlotte M
dc.contributor.authorPandit, M
dc.contributor.authorRubatto, Daniela
dc.contributor.authorHermann, Joerg
dc.date.accessioned2015-12-07T22:23:58Z
dc.date.issued2006
dc.date.updated2015-12-07T09:25:10Z
dc.description.abstractThe Banded Gneiss Complex (BGC) of Rajasthan (NW India) is generally thought to be an Archaean basement terrain that was partially reworked during the Palaeoproterozoic. In the central Aravalli mountains the BGC comprises the inferred Palaeoproterozoic granulite-facies Sandmata Complex (charno-enderbite plutons and supracrustal rocks) and the amphibolite-facies Mangalwar Complex (felsic orthogneisses, amphibolites and supracrustal rocks) of presumed Archaean age. Laser ablation ICP-MS U-Pb dating of zircon domains shows that: (a) granulite-facies metamorphism and charno-enderbite magmatism in the Sandmata Complex were synchronous at ∼1720 Ma; (b) igneous protoliths to migmatitic felsic orthogneisses in the Mangalwar Complex have similar emplacement ages as the Sandmata Complex charno-enderbite suite; (c) protoliths to a metasediment from the Sandmata Complex and the Mangalwar Complex were both deposited in the Proterozoic, not the Archaean as previously believed; (d) isotopic disturbance of igneous zircon, and limited growth of new zircon occurred at ∼950-940 Ma, which is tentatively suggested to date amphibolite-facies re-working and anatexis. These data raise questions about whether the BGC in the central Aravalli mountains can be correlated with an apparently similar terrain further to the south, whose magmatic and orogenic history is Archaean.
dc.identifier.issn0301-9268
dc.identifier.urihttp://hdl.handle.net/1885/20957
dc.publisherElsevier
dc.sourcePrecambrian Research
dc.subjectKeywords: Archean; granulite facies; historical ecology; isotopic ratio; laser; magmatism; metamorphism; Proterozoic; protolith; uranium-lead dating; zircon; Aravalli Range; Asia; Eurasia; India; Rajasthan; South Asia Banded Gneiss Complex; LA-ICP-MS; Rajasthan; U-Pb; Zircon
dc.titleThe Proterozoic magmatic and metamorphic history of the Banded Gneiss Complex, central Rajasthan, India: LA-ICP-MS U-Pb zircon contstraints
dc.typeJournal article
local.bibliographicCitation.lastpage142
local.bibliographicCitation.startpage119
local.contributor.affiliationBuick, Ian, Monash University
local.contributor.affiliationAllen, Charlotte M, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationPandit, M, University of Rajasthan
local.contributor.affiliationRubatto, Daniela, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationHermann, Joerg, College of Physical and Mathematical Sciences, ANU
local.contributor.authoremailu9909045@anu.edu.au
local.contributor.authoruidAllen, Charlotte M, u9108301
local.contributor.authoruidRubatto, Daniela, u9909045
local.contributor.authoruidHermann, Joerg, u9907179
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor040203 - Isotope Geochemistry
local.identifier.absfor040304 - Igneous and Metamorphic Petrology
local.identifier.ariespublicationu9503261xPUB14
local.identifier.citationvolume151
local.identifier.doi10.1016/j.precamres.2006.08.006
local.identifier.scopusID2-s2.0-33750472692
local.identifier.uidSubmittedByu9503261
local.type.statusPublished Version

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