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dc.contributor.authorWang, Wei
dc.contributor.authorCawood, Peter A.
dc.contributor.authorZhou, Mei-Fu
dc.contributor.authorPandit, Manoj K.
dc.contributor.authorXia, Xiao-Ping
dc.contributor.authorZhao, Jun-Hong
dc.identifier.citationWang , W , Cawood , P A , Zhou , M-F , Pandit , M K , Xia , X-P & Zhao , J-H 2017 , ' Low-δ 18 O rhyolites from the Malani Igneous Suite : a positive test for South China and NW India linkage in Rodinia ' , Geophysical Research Letters , vol. 44 , no. 20 , pp. 10298-10305 .
dc.identifier.otherBibtex: urn:35614874e4d2dd43fad07cac58cd05f5
dc.descriptionThis study was supported by the National Natural Science Foundation of China (NSFC41572170), “Thousand Youth Talents Plan” grant to Wei Wang, Guangzhou municipal government (201607020029), and MOST Special Fund from the State Key Laboratory of Geological Processes and Mineral Resources (MSFGPMR11 and 01-1). P.A.C. acknowledges support from Australian Research Council grant FL160100168.en
dc.description.abstractThe Malani Igneous Suite (MIS) in NW India represents one of the best preserved silicic large igneous provinces. Voluminous silicic lavas of the MIS erupted between ca. 780-750 Ma. Zircon grains from rhyolite and dacite lavas have oxygen isotopic compositions that include depleted (δ18O = 4.12 to -1.11‰) and enriched (δ18O = 8.23-5.12‰) signatures. The low-δ18O zircon grains have highly radiogenic Hf isotopic compositions (ƐHf(t)= +13.0 to +3.6), suggesting high temperature bulk cannibalization of upper level juvenile mafic crust as an essential mechanism to produce the low-δ18O felsic magma. Xenocrystic zircon grains in dacites have high δ18O and low ƐHf(t) values for magmas older than 800 Ma, reflecting a dramatic transition in tectono-thermal regime in NW India during 800-780 Ma. A synchronous transition also occurred in South China and Madagascar, suggesting a spatially linked geodynamic system. NW India and South China together with Madagascar and the Seychelles lay either along the periphery of Rodinia or outboards of the supercontinent with the age of convergent plate margin magmatism coinciding with breakup of the supercontinent.
dc.relation.ispartofGeophysical Research Lettersen
dc.subjectLow δ18O magmaen
dc.subjectMalani Igneous Suiteen
dc.subjectLocalized lithospheric extensionen
dc.subjectNW Indiaen
dc.subjectSouth Chinaen
dc.subjectQE Geologyen
dc.titleLow-δ18O rhyolites from the Malani Igneous Suite : a positive test for South China and NW India linkage in Rodiniaen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. St Andrews Isotope Geochemistryen
dc.description.statusPeer revieweden

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