Department of Geosciences, National Taiwan UniversityLi, Xian-HuaXian-HuaLiLi, Zheng-XiangZheng-XiangLiWingate, T.D.T.D.WingateChung, Sun-LinSun-LinChungLiu, YingYingLiuLin, Guang-ChunGuang-ChunLinLi, Wu-XianWu-XianLi2006-11-142018-06-282006-11-142018-06-282006http://www.scopus.com/inward/record.url?eid=2-s2.0-33645164593&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/324821http://ntur.lib.ntu.edu.tw/bitstream/246246/2006111501254700/1/1247.pdfGeochemical & Nd¡VHf isotopic data are reported for dolerite samples from the Neoproterozoic (755 Ma) Mundine Well dyke swarm in northwestern Australia. These dolerites are tholeiitic in composition, crystallised from a common parental magma. Although the dolerite magma underwent varying degrees of crustal contamination during ascent & emplacement, the uncontaminated parental melt possessed geochemical & Nd isotopic characteristics, such as Nb/La?1.5, Nb/Th?15, Nb/U?50, Nd(T)?5, & Hf(T)?9 (estimated by extrapolation from geochemical correlations), that closely resemble plume-derived ocean island basalts. These features are also similar to those of dolerite dykes of similar age from Seychelles & South China.We propose that these late Neoproterozoic mafic suites may have been generated by melting of a vast asthenospheric mantle superplume that developed beneath, & led to breakup of, the Rodinia supercontinent.application/pdf675623 bytesapplication/pdfzh-TWNeoproterozoicDolerite dykesNorthwestern AustraliaMantle superplumeRodinia[SDGs]SDG14journal article10.1016/j.precamres.2005.12.0072-s2.0-33645164593WOS:000236777500001http://ntur.lib.ntu.edu.tw/bitstream/246246/2006111501254700/1/1247.pdf