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Article: Geochemical and geochronological study of early Carboniferous volcanic rocks from the West Junggar: petrogenesis and tectonic implications

TitleGeochemical and geochronological study of early Carboniferous volcanic rocks from the West Junggar: petrogenesis and tectonic implications
Authors
KeywordsAndesite
Basalt
Carboniferous
Dacite
Geochronology
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaes
Citation
Journal of Asian Earth Sciences, 2011, v. 42 n. 5, p. 854-866 How to Cite?
AbstractA series of early Carboniferous volcanic rocks, i.e., basalt, andesite, and dacite, occur in the West Junggar. Zircon U-Pb isotopic data indicate that these rocks coevally erupted at 331-344Ma. These volcanic rocks have comparable trace element patterns, characterized by the enrichment of large ion lithophile elements (LILE) and the depletion of high field strength elements (HFSE). Isotopically, they display consistently depleted Sr-Nd isotopic compositions (initial 87Sr/ 86Sr ratios=0.7034-0.7054, ε Nd(t)=4.2-7.7). These rocks are interpreted to be derived from a slightly metasomatized depleted mantle in a normal subduction environment. In the context of a previously proposed ridge subduction model, this study constrains that ridge subduction, if it indeed occurred, commenced between 331 and 310Ma in the central West Junggar. © 2011 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/151327
ISSN
2015 Impact Factor: 2.647
2015 SCImago Journal Rankings: 1.393
ISI Accession Number ID
Funding AgencyGrant Number
National Basic Research Program of China2007CB411308
Hong Kong Research Grants CouncilHKU7043/07P
Hong Kong-Germany Research Scheme
University of Hong Kong
HKU
Funding Information:

This study was supported by research grants from National Basic Research Program of China (2007CB411308), Hong Kong Research Grants Council (HKU7043/07P), Hong Kong-Germany Research Scheme and a CRCG Grant from the University of Hong Kong. We thank Ying Liu, Chaofeng Li, and Xiaoping Xia for laboratory assistance. Xiaoping Long, Keda Cai, Kenny Wong, Yingde Jiang and Jiyuan Yin are thanked for their kindly help during the field work as well as for many helpful discussions. An earlier version of this paper was greatly improved by in-depth reviews by Paul T. Robinson and an anonymous reviewer. An HKU postgraduate studentship to Hongyan GENG is gratefully acknowledged.

References

 

DC FieldValueLanguage
dc.contributor.authorGeng, Hen_US
dc.contributor.authorSun, Men_US
dc.contributor.authorYuan, Cen_US
dc.contributor.authorZhao, Gen_US
dc.contributor.authorXiao, Wen_US
dc.date.accessioned2012-06-26T06:20:39Z-
dc.date.available2012-06-26T06:20:39Z-
dc.date.issued2011en_US
dc.identifier.citationJournal of Asian Earth Sciences, 2011, v. 42 n. 5, p. 854-866en_US
dc.identifier.issn1367-9120en_US
dc.identifier.urihttp://hdl.handle.net/10722/151327-
dc.description.abstractA series of early Carboniferous volcanic rocks, i.e., basalt, andesite, and dacite, occur in the West Junggar. Zircon U-Pb isotopic data indicate that these rocks coevally erupted at 331-344Ma. These volcanic rocks have comparable trace element patterns, characterized by the enrichment of large ion lithophile elements (LILE) and the depletion of high field strength elements (HFSE). Isotopically, they display consistently depleted Sr-Nd isotopic compositions (initial 87Sr/ 86Sr ratios=0.7034-0.7054, ε Nd(t)=4.2-7.7). These rocks are interpreted to be derived from a slightly metasomatized depleted mantle in a normal subduction environment. In the context of a previously proposed ridge subduction model, this study constrains that ridge subduction, if it indeed occurred, commenced between 331 and 310Ma in the central West Junggar. © 2011 Elsevier Ltd.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaesen_US
dc.relation.ispartofJournal of Asian Earth Sciencesen_US
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in <Journal title>. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in PUBLICATION, [VOL#, ISSUE#, (DATE)] DOI#-
dc.subjectAndesiteen_US
dc.subjectBasalten_US
dc.subjectCarboniferousen_US
dc.subjectDaciteen_US
dc.subjectGeochronologyen_US
dc.titleGeochemical and geochronological study of early Carboniferous volcanic rocks from the West Junggar: petrogenesis and tectonic implicationsen_US
dc.typeArticleen_US
dc.identifier.emailGeng, H: helenhk@hku.hken_US
dc.identifier.emailSun, M: minsun@hku.hken_US
dc.identifier.emailZhao, G: gzhao@hkucc.hku.hk-
dc.identifier.authoritySun, M=rp00780en_US
dc.identifier.authorityZhao, G=rp00842en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.jseaes.2011.01.006en_US
dc.identifier.scopuseid_2-s2.0-80053242000en_US
dc.identifier.hkuros204303-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80053242000&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume42en_US
dc.identifier.issue5en_US
dc.identifier.spage854en_US
dc.identifier.epage866en_US
dc.identifier.isiWOS:000296304700007-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridXiao, W=7202456615en_US
dc.identifier.scopusauthoridZhao, G=7403296321en_US
dc.identifier.scopusauthoridYuan, C=35241599200en_US
dc.identifier.scopusauthoridSun, M=25932315800en_US
dc.identifier.scopusauthoridGeng, H=26644953700en_US
dc.identifier.citeulike8796313-

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