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Article: Zircon U-Pb and Hf isotopic study of Mesozoic felsic rocks from eastern Zhejiang, South China: Geochemical contrast between the Yangtze and Cathaysia blocks
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TitleZircon U-Pb and Hf isotopic study of Mesozoic felsic rocks from eastern Zhejiang, South China: Geochemical contrast between the Yangtze and Cathaysia blocks
 
AuthorsWong, J2
Sun, M2
Xing, G1
Li, XH4 3
Zhao, G2
Wong, K2
Wu, F3
 
KeywordsGranitoid
Mesozoic
South China
Zhejiang Province
Zircon Lu-Hf isotope
 
Issue Date2011
 
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcr
 
CitationGondwana Research, 2011, v. 19 n. 1, p. 244-259 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.gr.2010.06.004
 
AbstractThe Jiangshan-Shaoxing Fault Zone (JSFZ) in Zhejiang Province has been proposed to represent a suture between the Yangtze and Cathaysia blocks in South China. In this study, in-situ zircon U-Pb and Hf isotopic analysis and whole-rock major- and trace-element measurement of early to middle Cretaceous felsic rocks across the fault zone were conducted to constrain the nature of the fault zone. Twelve Cretaceous granitoid bodies were sampled from the NW and SE sides of the fault zone, respectively, with composition ranging from diorite to granite (SiO2=56.2-76.6wt.%). These granitoids yielded U-Pb ages ranging from 135-100Ma, with a systematic variation in zircon Hf isotopic compositions (εHf(t)=+6.9 to -7.0 in the NW side vs. +1.9 to -12.9 in the SE side). The TDM2 values for the granitoids from the NW side are 0.34 to 1.33Ga, with two peaks at ca. 876 and 1170Ma respectively, whereas those from the SE side are 0.70 to 1.62Ga, with a single peak at ca. 1126Ma. The Hf isotopic disparity for the two sides may indicate a fundamental difference in the lower crustal compositions of the Yangtze and Cathaysia blocks, supporting that the JSFZ is possibly a suture zone between the two blocks. Our results together with the available geological data suggest that the Mesoproterozoic materials are important for both the Yangtze and Cathaysia basement and the Neoproterozoic magmatic activities were important in the Yangtze Block, possibly related to the break-up of the Rodinia supercontinent, but less significant in the Cathaysia Block. This may imply that the two blocks have not completely juxtaposed in the Neoproterozoic. © 2010 International Association for Gondwana Research.
 
ISSN1342-937X
2013 Impact Factor: 8.122
2013 SCImago Journal Rankings: 3.898
 
DOIhttp://dx.doi.org/10.1016/j.gr.2010.06.004
 
ISI Accession Number IDWOS:000286960100019
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU 7041/05P
Chinese Ministry of Land and Resources200811015
Chemical Geodynamics Joint Laboratory
HKU
Guangzhou Institute of Geochemistry
Funding Information:

The authors appreciate the great efforts of Prof. M. Santosh, Dr. Wenjiao Xiao, Dr. Jianbo Zhou and an anonymous reviewer for their constructive reviews to improve the quality of this paper. We acknowledge Dr. George S.-K. Ma for the scientific discussion, Longming Li for field work, Xiao Fu, Lily Chiu, Liang Qi, Liewen Xie, Yueheng Yang, Xiaoping Xia and Jiangfeng Gao for laboratory assistance. This study was supported by research grants from the Research Grant Council of Hong Kong (HKU 7041/05P), the Chinese Ministry of Land and Resources (200811015), the Chemical Geodynamics Joint Laboratory between HKU and Guangzhou Institute of Geochemistry.

 
ReferencesReferences in Scopus
 
GrantsUsing U-Pb and Hf isotope compositions of inherited zircon cores from granitoids to constrain the suture between the Yangtze and Cathaysia Blocks
 
DC FieldValue
dc.contributor.authorWong, J
 
dc.contributor.authorSun, M
 
dc.contributor.authorXing, G
 
dc.contributor.authorLi, XH
 
dc.contributor.authorZhao, G
 
dc.contributor.authorWong, K
 
dc.contributor.authorWu, F
 
dc.date.accessioned2011-09-23T05:46:24Z
 
dc.date.available2011-09-23T05:46:24Z
 
dc.date.issued2011
 
dc.description.abstractThe Jiangshan-Shaoxing Fault Zone (JSFZ) in Zhejiang Province has been proposed to represent a suture between the Yangtze and Cathaysia blocks in South China. In this study, in-situ zircon U-Pb and Hf isotopic analysis and whole-rock major- and trace-element measurement of early to middle Cretaceous felsic rocks across the fault zone were conducted to constrain the nature of the fault zone. Twelve Cretaceous granitoid bodies were sampled from the NW and SE sides of the fault zone, respectively, with composition ranging from diorite to granite (SiO2=56.2-76.6wt.%). These granitoids yielded U-Pb ages ranging from 135-100Ma, with a systematic variation in zircon Hf isotopic compositions (εHf(t)=+6.9 to -7.0 in the NW side vs. +1.9 to -12.9 in the SE side). The TDM2 values for the granitoids from the NW side are 0.34 to 1.33Ga, with two peaks at ca. 876 and 1170Ma respectively, whereas those from the SE side are 0.70 to 1.62Ga, with a single peak at ca. 1126Ma. The Hf isotopic disparity for the two sides may indicate a fundamental difference in the lower crustal compositions of the Yangtze and Cathaysia blocks, supporting that the JSFZ is possibly a suture zone between the two blocks. Our results together with the available geological data suggest that the Mesoproterozoic materials are important for both the Yangtze and Cathaysia basement and the Neoproterozoic magmatic activities were important in the Yangtze Block, possibly related to the break-up of the Rodinia supercontinent, but less significant in the Cathaysia Block. This may imply that the two blocks have not completely juxtaposed in the Neoproterozoic. © 2010 International Association for Gondwana Research.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationGondwana Research, 2011, v. 19 n. 1, p. 244-259 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.gr.2010.06.004
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.gr.2010.06.004
 
dc.identifier.epage259
 
dc.identifier.hkuros193906
 
dc.identifier.isiWOS:000286960100019
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU 7041/05P
Chinese Ministry of Land and Resources200811015
Chemical Geodynamics Joint Laboratory
HKU
Guangzhou Institute of Geochemistry
Funding Information:

The authors appreciate the great efforts of Prof. M. Santosh, Dr. Wenjiao Xiao, Dr. Jianbo Zhou and an anonymous reviewer for their constructive reviews to improve the quality of this paper. We acknowledge Dr. George S.-K. Ma for the scientific discussion, Longming Li for field work, Xiao Fu, Lily Chiu, Liang Qi, Liewen Xie, Yueheng Yang, Xiaoping Xia and Jiangfeng Gao for laboratory assistance. This study was supported by research grants from the Research Grant Council of Hong Kong (HKU 7041/05P), the Chinese Ministry of Land and Resources (200811015), the Chemical Geodynamics Joint Laboratory between HKU and Guangzhou Institute of Geochemistry.

 
dc.identifier.issn1342-937X
2013 Impact Factor: 8.122
2013 SCImago Journal Rankings: 3.898
 
dc.identifier.issue1
 
dc.identifier.scopuseid_2-s2.0-78650717215
 
dc.identifier.spage244
 
dc.identifier.urihttp://hdl.handle.net/10722/139182
 
dc.identifier.volume19
 
dc.languageeng
 
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jcr
 
dc.publisher.placeNetherlands
 
dc.relation.ispartofGondwana Research
 
dc.relation.projectUsing U-Pb and Hf isotope compositions of inherited zircon cores from granitoids to constrain the suture between the Yangtze and Cathaysia Blocks
 
dc.relation.referencesReferences in Scopus
 
dc.subjectGranitoid
 
dc.subjectMesozoic
 
dc.subjectSouth China
 
dc.subjectZhejiang Province
 
dc.subjectZircon Lu-Hf isotope
 
dc.titleZircon U-Pb and Hf isotopic study of Mesozoic felsic rocks from eastern Zhejiang, South China: Geochemical contrast between the Yangtze and Cathaysia blocks
 
dc.typeArticle
 
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Author Affiliations
  1. Institute of Geology and Mineral Resources
  2. The University of Hong Kong
  3. Institute of Geology and Geophysics Chinese Academy of Sciences
  4. Guangzhou Institute of Geochemistry Chinese Academy of Sciences