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Article: SHRIMP and LA-ICP-MS zircon geochronology of the Xiong'er volcanic rocks: Implications for the Paleo-Mesoproterozoic evolution of the southern margin of the North China Craton

TitleSHRIMP and LA-ICP-MS zircon geochronology of the Xiong'er volcanic rocks: Implications for the Paleo-Mesoproterozoic evolution of the southern margin of the North China Craton
Authors
KeywordsColumbia supercontinent
LA-ICP-MS
North China Craton
Paleo-Mesoproterozoic
SHRIMP
Xiong'er volcanic rocks
Issue Date2009
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamres
Citation
Precambrian Research, 2009, v. 168 n. 3-4, p. 213-222 How to Cite?
AbstractThe Paleo-Mesoproterozoic Xiong'er volcanic rocks along the southern margin of the North China Craton are lithologically and geochemically similar to those formed in subduction-related, continental margin volcanic arcs. The volcanic rocks are primarily composed of basaltic andesites and andesites, with minor dacites and dacitic rhyolites. Traditionally, the Xiong'er volcanic rocks have been divided from lower to upper into the Xushan, Jidanping and Majiahe Formations, but the ages of volcanic rocks in these formations have not been well constrained, which has hindered further understanding the tectonic significance of the Xiong'er volcanic belt at the southern margin of the North China Craton. SHRIMP and LA-ICP-MS U-Pb zircon analyses, combined with cathodeluminescence (CL) images, have enabled resolution of xenocrystic and magmatic zircons that can be directed toward determination of the ages of the Xiong'er volcanic rocks. SHRIMP and LA-ICP-MS U-Pb analyses on magmatic zircons from two basaltic andesite samples, one dacite sample and one rhyolite sample of the Xushan Formation, known as the lowest sequence of the Xiong'er volcanic rocks, indicate that the volcanic eruption of this Formation occurred at ∼1.78 Ga, but most xenocrystic/inherited zircons in these samples yielded 207Pb/ 206Pb ages ranging from 2.55 Ga to 1.91 Ga. Of three samples collected from the Jidanping Formation, two rhyolite samples (05XE015 and 05XE100) yielded weighted mean 207Pb/ 206Pb ages of 1778 ± 5.5 Ma and 1751 ± 14 Ma, respectively, similar to the ages of the volcanic rocks in the Xushan Formation, whereas one dacite sample (05XE066) gave a weighted mean 207Pb/ 206Pb age of 1450 ± 31 Ma, which is the youngest age obtained from the Xiong'er volcanic rocks. One andesite sample (06XS012) collected from the Majiahe Formation yielded two major age populations, with the older one at 1850 ± 5.9 Ma, interpreted as the age of the xenocrystic/inherited zircons, and the younger one at 1778 ± 6.1 Ma, interpreted as the age of the volcanic eruption to form the Majiahe andesite, coeval with the formation of most volcanic rocks from the Xushan and Jidanping Formations. These new SHRIMP and LA-ICP-MS U-Pb zircon data indicate that the traditional stratigraphic subdivision of the lower, middle and upper sequences of the Xiong'er volcanic rocks is not viable and that most of the Xiong'er volcanic rocks formed at 1.78-1.75 Ga, with minor felsic volcanic rocks erupting at ∼1.45 Ga. Similar-aged arc-related volcanic belts have also been found in the southern margin of North America, Greenland and Baltica, the western margin of the Amazonia Craton, the southern and eastern margins of the North Australia Craton, and the eastern margin of the Gawler Craton, which are considered to represent long-lived (1.8-1.3 Ga), subduction-related growth via accretion at key continental margins of the Paleo-Mesoproterzoic Columbia (Nuna) supercontinent. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151272
ISSN
2015 Impact Factor: 4.037
2015 SCImago Journal Rankings: 3.214
ISI Accession Number ID
Funding AgencyGrant Number
Chinese National 973 Program2007CB411307
Chinese NSFC40730315
Hong Kong RGC7063/06P
7055/05P
7066/07P
7053/08P
China Ministry of Education113070111
Funding Information:

This research was funded by the Chinese National 973 Program (2007CB411307), Chinese NSFC Grant (40730315), Hong Kong RGC grants (7063/06P, 7055/05P,7066/07P and 7053/08P), and 111 Program (113070111) from the China Ministry of Education. The study was also partly supported by the CAS/SAFEA International Partnership Program for Creative Research Teams. The final version of this paper benefited from constructive comments from two anonymous reviewers and the Editor Peter A. Cawood.

References

 

DC FieldValueLanguage
dc.contributor.authorHe, Yen_HK
dc.contributor.authorZhao, Gen_HK
dc.contributor.authorSun, Men_HK
dc.contributor.authorXia, Xen_HK
dc.date.accessioned2012-06-26T06:19:48Z-
dc.date.available2012-06-26T06:19:48Z-
dc.date.issued2009en_HK
dc.identifier.citationPrecambrian Research, 2009, v. 168 n. 3-4, p. 213-222en_HK
dc.identifier.issn0301-9268en_HK
dc.identifier.urihttp://hdl.handle.net/10722/151272-
dc.description.abstractThe Paleo-Mesoproterozoic Xiong'er volcanic rocks along the southern margin of the North China Craton are lithologically and geochemically similar to those formed in subduction-related, continental margin volcanic arcs. The volcanic rocks are primarily composed of basaltic andesites and andesites, with minor dacites and dacitic rhyolites. Traditionally, the Xiong'er volcanic rocks have been divided from lower to upper into the Xushan, Jidanping and Majiahe Formations, but the ages of volcanic rocks in these formations have not been well constrained, which has hindered further understanding the tectonic significance of the Xiong'er volcanic belt at the southern margin of the North China Craton. SHRIMP and LA-ICP-MS U-Pb zircon analyses, combined with cathodeluminescence (CL) images, have enabled resolution of xenocrystic and magmatic zircons that can be directed toward determination of the ages of the Xiong'er volcanic rocks. SHRIMP and LA-ICP-MS U-Pb analyses on magmatic zircons from two basaltic andesite samples, one dacite sample and one rhyolite sample of the Xushan Formation, known as the lowest sequence of the Xiong'er volcanic rocks, indicate that the volcanic eruption of this Formation occurred at ∼1.78 Ga, but most xenocrystic/inherited zircons in these samples yielded 207Pb/ 206Pb ages ranging from 2.55 Ga to 1.91 Ga. Of three samples collected from the Jidanping Formation, two rhyolite samples (05XE015 and 05XE100) yielded weighted mean 207Pb/ 206Pb ages of 1778 ± 5.5 Ma and 1751 ± 14 Ma, respectively, similar to the ages of the volcanic rocks in the Xushan Formation, whereas one dacite sample (05XE066) gave a weighted mean 207Pb/ 206Pb age of 1450 ± 31 Ma, which is the youngest age obtained from the Xiong'er volcanic rocks. One andesite sample (06XS012) collected from the Majiahe Formation yielded two major age populations, with the older one at 1850 ± 5.9 Ma, interpreted as the age of the xenocrystic/inherited zircons, and the younger one at 1778 ± 6.1 Ma, interpreted as the age of the volcanic eruption to form the Majiahe andesite, coeval with the formation of most volcanic rocks from the Xushan and Jidanping Formations. These new SHRIMP and LA-ICP-MS U-Pb zircon data indicate that the traditional stratigraphic subdivision of the lower, middle and upper sequences of the Xiong'er volcanic rocks is not viable and that most of the Xiong'er volcanic rocks formed at 1.78-1.75 Ga, with minor felsic volcanic rocks erupting at ∼1.45 Ga. Similar-aged arc-related volcanic belts have also been found in the southern margin of North America, Greenland and Baltica, the western margin of the Amazonia Craton, the southern and eastern margins of the North Australia Craton, and the eastern margin of the Gawler Craton, which are considered to represent long-lived (1.8-1.3 Ga), subduction-related growth via accretion at key continental margins of the Paleo-Mesoproterzoic Columbia (Nuna) supercontinent. © 2008 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/precamresen_HK
dc.relation.ispartofPrecambrian Researchen_HK
dc.rightsPrecambrian Research. Copyright © Elsevier BV.-
dc.subjectColumbia supercontinenten_HK
dc.subjectLA-ICP-MSen_HK
dc.subjectNorth China Cratonen_HK
dc.subjectPaleo-Mesoproterozoicen_HK
dc.subjectSHRIMPen_HK
dc.subjectXiong'er volcanic rocksen_HK
dc.titleSHRIMP and LA-ICP-MS zircon geochronology of the Xiong'er volcanic rocks: Implications for the Paleo-Mesoproterozoic evolution of the southern margin of the North China Cratonen_HK
dc.typeArticleen_HK
dc.identifier.emailZhao, G: gzhao@hkucc.hku.hken_HK
dc.identifier.emailSun, M: minsun@hku.hken_HK
dc.identifier.emailXia, X: xpxia@hotmail.comen_HK
dc.identifier.authorityZhao, G=rp00842en_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.identifier.authorityXia, X=rp00815en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.precamres.2008.09.011en_HK
dc.identifier.scopuseid_2-s2.0-58549113774en_HK
dc.identifier.hkuros154948-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-58549113774&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume168en_HK
dc.identifier.issue3-4en_HK
dc.identifier.spage213en_HK
dc.identifier.epage222en_HK
dc.identifier.isiWOS:000263586000005-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridHe, Y=55390137500en_HK
dc.identifier.scopusauthoridZhao, G=7403296321en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK
dc.identifier.scopusauthoridXia, X=35241486400en_HK

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