Mineralisation associated with the fractionated Cretaceous Baoshan Monzogranite: Tectonic implications for South China

dc.contributor.authorZhang, Zhiqiang
dc.contributor.authorBagas, Leon
dc.contributor.authorMao, Jingwen
dc.contributor.authorChen, Maohong
dc.contributor.authorFu, Bin
dc.date.accessioned2020-03-06T02:22:27Z
dc.date.issued2018
dc.date.updated2019-11-25T07:39:34Z
dc.description.abstractJurassic and Late Cretaceous granites are spatially and temporally associated with mineralisation in the Paleozoic Dayaoshan Terrane in South China (also known as South China Block). The porphyritic Baoshan Monzogranite of Late Cretaceous is an example that is petrographically studied in this contribution. Sensitive High-Resolution Ion-Microprobe (SHRIMP) zircon U-Pb ages, in-situ zircon O-Hf isotopic analyses, and whole-rock geochemistry are here used to better constrain the genesis of the monzogranite, which is porphyritic, and located in the Baoshan Cu mining area. SHRIMP zircon dating yields a weighted mean 206Pb/238U age of 89 ± 1 Ma, interpreted to be the crystallisation age of the porphyritic monzogranite. Its geochemical data indicates it is derived from partial melting of the lower to crust, followed by fractionation, and emplacement in secondary faults related to the major Bobai-Cenxi Fault. The monzogranite has a Paleo- to Mesoproterozoic source in the crust, which was metasomatised during Neoproterozoic subduction. The rotation of Izanagi Plate’s subduction from NW to NE resulted into the reactivation of NW and NE-trending thrust faults as transpressional or extensional ones. It was during this period that Late Cretaceous intrusions such as the Baoshan porphyritic monzogranite were emplaced in the terrane near the NW-trending faults and other intrusions at the edges of basins such as Yangchun, Luoding and Bobai basins near NE-trending faults.en_AU
dc.description.sponsorshipThis research was financially supported by the National Natural Science Foundation of China (Projects 41572072) and the National Key Basic Research Program of China (Project 2014CB440902).en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn0169-1368en_AU
dc.identifier.urihttp://hdl.handle.net/1885/202067
dc.language.isoen_AUen_AU
dc.publisherElsevieren_AU
dc.rights© 2018 Elsevier B.V.en_AU
dc.sourceOre Geology Reviewsen_AU
dc.titleMineralisation associated with the fractionated Cretaceous Baoshan Monzogranite: Tectonic implications for South Chinaen_AU
dc.typeJournal articleen_AU
local.bibliographicCitation.issue11en_AU
local.bibliographicCitation.lastpage810en_AU
local.bibliographicCitation.startpage791en_AU
local.contributor.affiliationZhang, Zhiqiang, China University of Geosciencesen_AU
local.contributor.affiliationBagas, Leon, Chinese Academy of Geological Scienceen_AU
local.contributor.affiliationMao, Jingwen, Chinese Academy of Geological Sciencesen_AU
local.contributor.affiliationChen, Maohong, Institute of Mineral Resourcesen_AU
local.contributor.affiliationFu, Bin, College of Science, ANUen_AU
local.contributor.authoremailrepository.admin@anu.edu.auen_AU
local.contributor.authoruidFu, Bin, u5078757en_AU
local.description.embargo2037-12-31
local.description.notesImported from ARIESen_AU
local.identifier.absfor040203 - Isotope Geochemistryen_AU
local.identifier.absfor040304 - Igneous and Metamorphic Petrologyen_AU
local.identifier.absseo840102 - Copper Ore Explorationen_AU
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciencesen_AU
local.identifier.ariespublicationu3102795xPUB372en_AU
local.identifier.citationvolume102en_AU
local.identifier.doi10.1016/j.oregeorev.2018.08.008en_AU
local.identifier.scopusID2-s2.0-85055058577
local.identifier.uidSubmittedByu3102795en_AU
local.publisher.urlhttps://www.elsevier.com/en-auen_AU
local.type.statusPublished Versionen_AU

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