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Article: Late Mesozoic magmatism from the Daye region, eastern China: U-Pb ages, petrogenesis, and geodynamic implications
Title | Late Mesozoic magmatism from the Daye region, eastern China: U-Pb ages, petrogenesis, and geodynamic implications | ||||||
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Authors | |||||||
Keywords | Adakite Eastern China Fractional crystallization Lithospheric extension Partial melting Yangtze craton | ||||||
Issue Date | 2009 | ||||||
Publisher | Springer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00410/index.htm | ||||||
Citation | Contributions To Mineralogy And Petrology, 2009, v. 157 n. 3, p. 383-409 How to Cite? | ||||||
Abstract | Late Mesozoic dioritic and quartz dioritic plutons are widespread in the Daye region, eastern Yangtze craton, eastern China. Detailed geochronological, geochemical, and Sr-Nd isotopic studies have been undertaken for most of these plutons, in an attempt to provide a comprehensive understanding in the age, genesis and geodynamical control of the extensive magmatism. SHRIMP and LA-ICP-MS zircon U-Pb dating indicate that the plutons were emplaced in the range of latest Jurassic (ca. 152 Ma) to early Cretaceous (ca. 132 Ma), which was followed by dyke emplacement between 127 and 121 Ma and volcanism during the 130 - 113 Ma interval. Both diorites and quartz diorites are sodic, metaluminous, high-K calc-alkaline, and characterized by strongly fractionated, sub-parallel REE patterns without obvious Eu anomalies. The rocks are enriched in highly incompatible elements and large ion lithophile elements, but depleted in high field strength elements. Samples of diorite and quartz diorite have similar Sr-Nd isotopic compositions that are consistent with the early Cretaceous basalts and mafic intrusions throughout the eastern Yangtze craton. The geochemical and isotopic data, together with results of geochemical modeling, indicate an enriched mantle source for the plutonic rocks. The quartz diorites have geochemical signatures resembling adakites, such as high Al 2O 3 (15 - 19 wt.%), Sr (630 - 2,080 ppm), Na 2O (>3.5 wt.%), negative Nb-Ta anomalies, low Y (7 - 19 ppm), Yb (0.5 - 1.8 ppm), Sc (5 - 15 ppm), and resultant high Sr/Y (45 - 200) and La/Yb (31 - 63) ratios. Genesis of the adakitic quartz diorites is best explained in terms of low-pressure intracrustal fractional crystallization of cumulates consisting of hornblende, plagioclase, K-feldspar, magnetite, and apatite from mantle-derived dioritic magmas. Mantle-derived magmatism broadly coeval with that of the Daye region also is widespread in other regions of the eastern Yangtze craton, reflecting large-scale melting of the lithospheric mantle during the Late Mesozoic. The large-scale magmatism was most likely driven by lithospheric extension associated with thinning of lithospheric mantle beneath the eastern China continent. © Springer-Verlag 2008. | ||||||
Persistent Identifier | http://hdl.handle.net/10722/139151 | ||||||
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 1.865 | ||||||
ISI Accession Number ID |
Funding Information: We acknowledge financial supports provided by Natural Science Foundation of China (grants 40334037 and 40521001), Chinese Ministry of Education (IRT0441), Chinese Ministry of Science and Technology (2007DFA21230), the 111 Project ( B07039), and the CRGC grants of the University of Hong Kong. Ms. Xiao Fu and Dr. Liang Qi are thanked for major and trace elemental analyses, respectively. Drs. Yan QR, Liu XM, and Chu ZY provided expert assistance in U - Pb dating and Sr - Nd isotope analysis, respectively. We thank Drs. Haibo Zou and Qiang Wang for their insights on an early draft of the paper. Constructive reviews by Wolfgang Siebel and Joerg Geldmacher have been of considerable importance in improving the paper, for which we are very grateful. Our thanks extend to Profs. Hans Keppler and Jochen Hoefs for useful editorial suggestions. | ||||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Li, JW | en_HK |
dc.contributor.author | Zhao, XF | en_HK |
dc.contributor.author | Zhou, MF | en_HK |
dc.contributor.author | Ma, CQ | en_HK |
dc.contributor.author | Souza, ZS | en_HK |
dc.contributor.author | Vasconcelos, P | en_HK |
dc.date.accessioned | 2011-09-23T05:46:04Z | - |
dc.date.available | 2011-09-23T05:46:04Z | - |
dc.date.issued | 2009 | en_HK |
dc.identifier.citation | Contributions To Mineralogy And Petrology, 2009, v. 157 n. 3, p. 383-409 | en_HK |
dc.identifier.issn | 0010-7999 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/139151 | - |
dc.description.abstract | Late Mesozoic dioritic and quartz dioritic plutons are widespread in the Daye region, eastern Yangtze craton, eastern China. Detailed geochronological, geochemical, and Sr-Nd isotopic studies have been undertaken for most of these plutons, in an attempt to provide a comprehensive understanding in the age, genesis and geodynamical control of the extensive magmatism. SHRIMP and LA-ICP-MS zircon U-Pb dating indicate that the plutons were emplaced in the range of latest Jurassic (ca. 152 Ma) to early Cretaceous (ca. 132 Ma), which was followed by dyke emplacement between 127 and 121 Ma and volcanism during the 130 - 113 Ma interval. Both diorites and quartz diorites are sodic, metaluminous, high-K calc-alkaline, and characterized by strongly fractionated, sub-parallel REE patterns without obvious Eu anomalies. The rocks are enriched in highly incompatible elements and large ion lithophile elements, but depleted in high field strength elements. Samples of diorite and quartz diorite have similar Sr-Nd isotopic compositions that are consistent with the early Cretaceous basalts and mafic intrusions throughout the eastern Yangtze craton. The geochemical and isotopic data, together with results of geochemical modeling, indicate an enriched mantle source for the plutonic rocks. The quartz diorites have geochemical signatures resembling adakites, such as high Al 2O 3 (15 - 19 wt.%), Sr (630 - 2,080 ppm), Na 2O (>3.5 wt.%), negative Nb-Ta anomalies, low Y (7 - 19 ppm), Yb (0.5 - 1.8 ppm), Sc (5 - 15 ppm), and resultant high Sr/Y (45 - 200) and La/Yb (31 - 63) ratios. Genesis of the adakitic quartz diorites is best explained in terms of low-pressure intracrustal fractional crystallization of cumulates consisting of hornblende, plagioclase, K-feldspar, magnetite, and apatite from mantle-derived dioritic magmas. Mantle-derived magmatism broadly coeval with that of the Daye region also is widespread in other regions of the eastern Yangtze craton, reflecting large-scale melting of the lithospheric mantle during the Late Mesozoic. The large-scale magmatism was most likely driven by lithospheric extension associated with thinning of lithospheric mantle beneath the eastern China continent. © Springer-Verlag 2008. | en_HK |
dc.language | eng | en_US |
dc.publisher | Springer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00410/index.htm | en_HK |
dc.relation.ispartof | Contributions to Mineralogy and Petrology | en_HK |
dc.rights | The original publication is available at www.springerlink.com | - |
dc.subject | Adakite | en_HK |
dc.subject | Eastern China | en_HK |
dc.subject | Fractional crystallization | en_HK |
dc.subject | Lithospheric extension | en_HK |
dc.subject | Partial melting | en_HK |
dc.subject | Yangtze craton | en_HK |
dc.title | Late Mesozoic magmatism from the Daye region, eastern China: U-Pb ages, petrogenesis, and geodynamic implications | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0010-7999&volume=157&issue=3&spage=383&epage=409&date=2009&atitle=Late+Mesozoic+magmatism+from+the+Daye+region,+eastern+China:+U–Pb+ages,+petrogenesis,+and+geodynamic+implications | - |
dc.identifier.email | Zhou, MF:mfzhou@hkucc.hku.hk | en_HK |
dc.identifier.authority | Zhou, MF=rp00844 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1007/s00410-008-0341-x | en_HK |
dc.identifier.scopus | eid_2-s2.0-58549120148 | en_HK |
dc.identifier.hkuros | 192931 | en_US |
dc.identifier.hkuros | 167324 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-58549120148&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 157 | en_HK |
dc.identifier.issue | 3 | en_HK |
dc.identifier.spage | 383 | en_HK |
dc.identifier.epage | 409 | en_HK |
dc.identifier.isi | WOS:000262490800007 | - |
dc.publisher.place | Germany | en_HK |
dc.identifier.scopusauthorid | Li, JW=36063037900 | en_HK |
dc.identifier.scopusauthorid | Zhao, XF=8942065800 | en_HK |
dc.identifier.scopusauthorid | Zhou, MF=7403506005 | en_HK |
dc.identifier.scopusauthorid | Ma, CQ=8142218900 | en_HK |
dc.identifier.scopusauthorid | Souza, ZS=6603234995 | en_HK |
dc.identifier.scopusauthorid | Vasconcelos, P=7005771965 | en_HK |
dc.identifier.citeulike | 3636145 | - |
dc.identifier.issnl | 0010-7999 | - |