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Article: Geochemical and isotopic study of the Xiong'er volcanic rocks at the southern margin of the North China Craton: Petrogenesis and tectonic implications

TitleGeochemical and isotopic study of the Xiong'er volcanic rocks at the southern margin of the North China Craton: Petrogenesis and tectonic implications
Authors
KeywordsEarth sciences
Geology
Issue Date2010
PublisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/JG
Citation
Journal Of Geology, 2010, v. 118 n. 4, p. 417-433 How to Cite?
AbstractThe Xiong'er volcanic rocks constitute a large Paleo-Mesoproterozoic volcanic belt along the southern margin of the North China Craton. The volcanic rocks can be petrographically and geochemically classified into the basaltic andesite- andesite and dacite-rhyolite series, with the former being the dominant component of the Xiong'er volcanic rocks. The volcanic rocks of the dacite-rhyolite series have been derived from the wet and low-temperature differentiation of the basaltic andesite-andesite series at shallow depth, suggested by regional geological, lithological, and geochemical studies. In addition, crustal assimilation was involved in the magmas to form volcanic rocks of the dacite-rhyolite series, as suggested by low εNd(t) values (-8.09 to ̃-9.99) and high Th/Yb ratios (1.7-2.7). Some of volcanic rocks from the basaltic andesite-andesite series show features of high-Mg andesites (HMA), being characterized by high MgO contents and Mg numbers, representing the most primitive end-member of the magmatic series in the Xiong'er volcanic rocks, whereas other volcanic rocks of the basaltic andesite-andesite series (low-magnesium andesites) can be assigned to evolved andesites because of their low MgO and relatively high SiO2 contents. In the crystallization sequence of Opx → Cpx → Pl from the HMAs, through low-magnesium andesites, to dacite-rhyolite series, inferred by the covariation of major and trace elements, the early crystallization of plagioclases could have been suppressed as a result of high water content. The Xiong'er volcanic rocks are characterized by arclike geochemical signatures (large ion lithophile element and light rare earth element enrichments and negative Ta-Nb-Ti anomalies) as well as remarkably high Fe-Ti and high field strength element concentrations. These features can be interpreted in terms of the subduction-related hydrous melting of a mantle that experienced siliceous melt-metasomatismduring the Archean-Paleoproterozoic hot subduction in the Trans-North China Orogen. Thus, we interpret the Xiong'er volcanic rocks to have formed at an active continental margin. This implies that the North China Craton, like other continental components (e.g., North America, Greenland, Baltica, Amazonia, and other cratons) of the Columbia supercontinent, also underwent a subduction-related outgrowth along its southern margin during Paleo-Mesoproterozoic time. © 2010 by The University of Chicago. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/65454
ISSN
2015 Impact Factor: 2.58
2015 SCImago Journal Rankings: 1.344
ISI Accession Number ID
Funding AgencyGrant Number
Chinese National 973 Program2007CB411307
Natural Science Foundation of China40730315
Hong Kong Research Grants Council7063/ 06P
7055/05P
7066/07P
7053/08P
Chinese Academy of Science (CAS)/State Administration of Foreign Experts Affairs (SAFEA)
Funding Information:

This research was funded by the Chinese National 973 Program (2007CB411307), the Natural Science Foundation of China (grant 40730315), and the Hong Kong Research Grants Council (grants 7063/ 06P, 7055/05P, 7066/07P, and 7053/08P). The study was also partly supported by the Chinese Academy of Science (CAS)/State Administration of Foreign Experts Affairs (SAFEA) International Partnership Program for Creative Research Teams. The final version of the article benefited from the comments of M. Santosh, one anonymous reviewer, and Editor David B. Rowley.

References

 

DC FieldValueLanguage
dc.contributor.authorHe, Yen_HK
dc.contributor.authorZhao, Gen_HK
dc.contributor.authorSun, Men_HK
dc.date.accessioned2010-08-09T03:01:54Z-
dc.date.available2010-08-09T03:01:54Z-
dc.date.issued2010en_HK
dc.identifier.citationJournal Of Geology, 2010, v. 118 n. 4, p. 417-433en_HK
dc.identifier.issn0022-1376en_HK
dc.identifier.urihttp://hdl.handle.net/10722/65454-
dc.description.abstractThe Xiong'er volcanic rocks constitute a large Paleo-Mesoproterozoic volcanic belt along the southern margin of the North China Craton. The volcanic rocks can be petrographically and geochemically classified into the basaltic andesite- andesite and dacite-rhyolite series, with the former being the dominant component of the Xiong'er volcanic rocks. The volcanic rocks of the dacite-rhyolite series have been derived from the wet and low-temperature differentiation of the basaltic andesite-andesite series at shallow depth, suggested by regional geological, lithological, and geochemical studies. In addition, crustal assimilation was involved in the magmas to form volcanic rocks of the dacite-rhyolite series, as suggested by low εNd(t) values (-8.09 to ̃-9.99) and high Th/Yb ratios (1.7-2.7). Some of volcanic rocks from the basaltic andesite-andesite series show features of high-Mg andesites (HMA), being characterized by high MgO contents and Mg numbers, representing the most primitive end-member of the magmatic series in the Xiong'er volcanic rocks, whereas other volcanic rocks of the basaltic andesite-andesite series (low-magnesium andesites) can be assigned to evolved andesites because of their low MgO and relatively high SiO2 contents. In the crystallization sequence of Opx → Cpx → Pl from the HMAs, through low-magnesium andesites, to dacite-rhyolite series, inferred by the covariation of major and trace elements, the early crystallization of plagioclases could have been suppressed as a result of high water content. The Xiong'er volcanic rocks are characterized by arclike geochemical signatures (large ion lithophile element and light rare earth element enrichments and negative Ta-Nb-Ti anomalies) as well as remarkably high Fe-Ti and high field strength element concentrations. These features can be interpreted in terms of the subduction-related hydrous melting of a mantle that experienced siliceous melt-metasomatismduring the Archean-Paleoproterozoic hot subduction in the Trans-North China Orogen. Thus, we interpret the Xiong'er volcanic rocks to have formed at an active continental margin. This implies that the North China Craton, like other continental components (e.g., North America, Greenland, Baltica, Amazonia, and other cratons) of the Columbia supercontinent, also underwent a subduction-related outgrowth along its southern margin during Paleo-Mesoproterozoic time. © 2010 by The University of Chicago. All rights reserved.en_HK
dc.languageeng-
dc.publisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/JGen_HK
dc.relation.ispartofJournal of Geologyen_HK
dc.rightsThe Journal of Geology. Copyright © University of Chicago Press.-
dc.subjectEarth sciences-
dc.subjectGeology-
dc.titleGeochemical and isotopic study of the Xiong'er volcanic rocks at the southern margin of the North China Craton: Petrogenesis and tectonic implicationsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-1376&volume=118&issue=4&spage=417–433&epage=&date=2010&atitle=Geochemical+and+isotopic+study+of+the+Xiong’er+volcanic+rocks+at+the+southern+margin+of+the+North+China+Craton:+petrogenesis+and+tectonic+implications-
dc.identifier.emailZhao, G:gzhao@hkucc.hku.hken_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.authorityZhao, G=rp00842en_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1086/652733en_HK
dc.identifier.scopuseid_2-s2.0-77955701301en_HK
dc.identifier.hkuros175406-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77955701301&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume118en_HK
dc.identifier.issue4en_HK
dc.identifier.spage417en_HK
dc.identifier.epage433en_HK
dc.identifier.isiWOS:000279162100005-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHe, Y=8678944900en_HK
dc.identifier.scopusauthoridZhao, G=7403296321en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.citeulike7412823-

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