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dc.contributor.authorWang, Wei
dc.contributor.authorCawood, Peter A.
dc.contributor.authorLiu, Shuwen
dc.contributor.authorGuo, Rongrong
dc.contributor.authorBai, Xiang
dc.contributor.authorWang, Kang
dc.identifier.citationWang , W , Cawood , P A , Liu , S , Guo , R , Bai , X & Wang , K 2017 , ' Cyclic formation and stabilization of Archean lithosphere by accretionary orogenesis : constraints from TTG and potassic granitoids, North China Craton ' , Tectonics , vol. 36 , no. 9 , pp. 1724-1742 .
dc.identifier.otherPURE: 250595784
dc.identifier.otherPURE UUID: 571ccceb-75ee-4fd2-8f25-c6e0ff9aad6e
dc.identifier.otherBibtex: urn:1c51abd50d4d2ecb2a1be374b015d5f6
dc.identifier.otherScopus: 85028916001
dc.identifier.otherWOS: 000413492300004
dc.descriptionThis study is financially supported by the National Natural Science Foundation of China (Grant Nos. 41502179, 41530207, 41472165) and Central University Basic Scientific Research Business Expenses of China University of Geosciences (Beijing) (Grant No. 2652015038). PAC acknowledges support from Australian Research Council grant FL160100168.en
dc.description.abstractAccretionary orogens are major sites of modern continental growth, yet their role in the development of Archean continental crust remains enigmatic. Diverse granitoid suites from tonalite-trondhjemite-granodiorite (TTG) to potassic granitoids appeared during late Archean, representing a period of major continental formation and stabilization. In this study, whole-rock geochemical and zircon U-Pb and Lu-Hf isotopic data are reported for Neoarchean granitoid gneisses from the Northern Liaoning Terrane, northeastern North China Craton (NCC). Older granitoid gneisses (~2592-2537 Ma) define three magmatic zones migrating from southeast to northwest, each showing a common magmatic evolution from high-pressure TTGs to medium-/low-pressure TTGs and potassic granitoids. They have depleted zircon ƐHf(t) of +0.5 to +8.7. Younger ~2529-2503 Ma potassic granitoids and TTGs occur throughout the terrane, which are marked by variable zircon ƐHf(t) of -4.7 to +8.1, and are coeval with regional high grade metamorphism. Petrogenetic modeling and changing Sr/Y and (La/Yb)N of the granitoids suggest that the crust experienced episodic thickening and thinning, and became progressively evolved through development of potassic granitoids and sedimentary successions. The metavolcanic basement to the granitoids display tholeiitic to calc-alkaline affinities, together with the top-to-the-northwest thrusting and associated VMS-type Cu-Zn deposits, suggesting cyclic crustal formation of Northern Liaoning within an accretionary orogen with a SE-dipping subduction polarity. Cyclic crustal thickening and thinning is related to tectonic switching from advancing to retreating relations between the downgoing and overriding plate. After ~2530 Ma, this accretionary system accreted to the ancient continental nucleus of NCC (Anshan-Benxi Terrane), signifying final lithosphere stabilization.
dc.rights©2017. American Geophysical Union. All Rights Reserved. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at:
dc.subjectTTG and potassic granitoid gneissesen
dc.subjectNorthern Liaoning Terraneen
dc.subjectNorth China Cratonen
dc.subjectCyclic lithosphere formation and stablizationen
dc.subjectAccretionary orogenen
dc.subjectGE Environmental Sciencesen
dc.subjectQE Geologyen
dc.titleCyclic formation and stabilization of Archean lithosphere by accretionary orogenesis : constraints from TTG and potassic granitoids, North China Cratonen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews. School of Geography and Geosciencesen
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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