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dc.contributor.authorFlowerdew, M.
dc.contributor.authorTyrrell, S.
dc.contributor.authorBoger, S.
dc.contributor.authorFitzsimons, Ian
dc.contributor.authorHarley, S.
dc.contributor.authorMikhalsky, E.
dc.contributor.authorVaughan, A.
dc.date.accessioned2017-01-30T13:35:45Z
dc.date.available2017-01-30T13:35:45Z
dc.date.created2013-12-17T20:00:36Z
dc.date.issued2013
dc.identifier.citationFlowerdew, M.J. and Tyrrell, S. and Boger, S.D. and Fitzsimons, I.C.W. and Harley, S.L. and Mikhalsky, E.V. and Vaughan, A.P.M. 2013. Pb isotopic domains from the Indian Ocean sector of Antarctica: implications for past Antarctica–India connections. Geological Society Special Publications. 383: pp. 59-72.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/33228
dc.identifier.doi10.1144/SP383.3
dc.description.abstract

New feldspar lead isotope compositions of crystalline rocks from the Indian Ocean sector of East Antarctica, in conjunction with the review of data from elsewhere within the continent and from continents formerly adjacent within Gondwana, refine boundaries and evolutionary histories of terranes previously inferred from geological mapping and complementary isotope studies. Coastal Archaean Vestfold and Napier complexes have overlapping compositions and had Pb isotopes homogenized at 2.5 Ga sourced from or within already fractionated protoliths with high and variable U–Pb. Identical compositions from the Dharwar Craton of India support a correlation with these Antarctic terranes. The Proterozoic–Palaeozoic Rayner Complex and Prydz Belt yield more radiogenic compositions and are broadly similar and strongly suggest these units correlate with parts of the Eastern Ghats Belt of India. A strikingly different signature is evident from the inboard Ruker Complex, which yielded unradiogenic compositions. This complex is unlike any unit within India or Australia, suggesting that these rocks represent exposures of an Antarctic (Crohn) Craton. Compositions from the enigmatic Rauer Terrane are consistent with a shared early history with the Ruker Complex but with a different post-Archaean evolution.

dc.publisherGeological Society Publishing House
dc.titlePb isotopic domains from the Indian Ocean sector of Antarctica: implications for past Antarctica–India connections
dc.typeJournal Article
dcterms.source.volume383
dcterms.source.startPage59
dcterms.source.endPage72
dcterms.source.issn0305-8719
dcterms.source.titleGeological Society Special Publication
curtin.note

Supplementary material: Feldspar LA-ICP-MS Pb isotope data are available at www.geolsoc.org.uk/SUP18622

curtin.department
curtin.accessStatusOpen access


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