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U-Pb ages and trace elements of detrital zircons from Early Cretaceous sedimentary rocks in the Jiaolai Basin, north margin of the Sulu UHP terrane: Provenances and tectonic implications

文献类型：期刊论文

作者Xie, Shiwen1,2; Wu, Yuanbao1; Zhang, Zeming2; Qin, Yacao3; Liu, Xiaochi1; Wang, Hao1; Qin, Zhengwei1; Liu, Qian1; Yang, Saihong4
刊名LITHOS
出版日期2012-12-01
卷号154页码:346-360
关键词Jiaolai basin Sulu terrane Detrital zircon Jiaobei terrane HP-UHP rocks
ISSN号0024-4937
DOI10.1016/j.lithos.2012.08.002
文献子类Article
英文摘要The Dabie-Sulu orogen in east-central China is the largest UHP belt in the world. Many studies have dealt with detrital minerals from sedimentary basins surrounding the Dabie belt in order to constrain the tectonic unroofing of this terrane. On the other hand, still few are the works focused on detritals from the basins associated with the Sulu belt The Jiaolai basin, adjacent to the Sulu belt, is made of Mesozoic sedimentary rocks. Two sandstone samples collected from the Early Cretaceous Laiyang Group in the northern and southern margins of the Jiaolai basin were selected for zircon U-Pb dating and trace element analysis. The zircons show main U-Pb age clusters at ca. 2500-2400, 2000-1700, 850-700, and 330-130 Ma, with a minor peak at ca. 1100 Ma and a few Archean ages. Most zircons show texture features reflecting a magmatic origin, whereas several late Paleoproterozoic and Triassic zircons show homogeneous CL images and low Th/U ratios, indicating a metamorphic origin. The Neoproterozoic ages are consistent with the protolith ages of the metamorphic rocks in the Sulu terrane, implying that the Sulu tarrane may be a major source for this component. Whereas most Neoproterozoic zircons are euhedral to subhedral or angular in shape and are not surrounded by overgrowths, this implies that low-grade metamorphic Neoproterozoic metaigneous rocks ocurring along the northern margin of the Sulu terrane or metasediments overlying the HP-UHP rocks in the Sulu terrane might provide source materials to these detrital zircons. The late and early Paleoproterozoic age peaks are consistent with the thermal events occurred in the Jiaobei terrane, slightly younger than those in the Yangtze Block. These suggest that the Jiaobei terrane was a potential source for the Paleoproterozoic to Archean detrital zircon components. Only two early Paleozoic zircon grains were found in the studied samples, indicating the early Paleozoic arc did not extend into the Sulu terrane. According to the distribution of different kinds of rock adjacent to the Sulu terrane, the Early Cretaceous detrital zircons may be potentially derived from Cretaceous plutons from the Sulu belt. Eight detrital zircons including six metamorphic grians and two metamorphic overgrowth rims yield the Triassic ages, which might be derived from HP-UHP rocks from the Sulu terrane. A metamorphic overgrowth rim yields a metamorphic age of 246 +/- 3 Ma, probably recording the timing of the prograde metamorphism of the Sulu terrane. One metamorphic grain yields an age of 212 +/- 2 Ma, which is interpreted to record a retrograde metamorphic event. Based on the REE patterns, the remaining six Triassic analyses can be subdivided into two groups. Four of them record a weighted mean age of 230 +/- 6 Ma and show nearly flat HREE patterns and slight negative or positive Eu anomalies. The last two grains are enriched HREE; considering their ages and the REE patterns, it is suggested that they may originate from other diverse UHP rocks. The Triassic metamorphic zircons were detected in the Laiyang Group, indicating that the Sulu UHP rocks were exposed to the surface before the Early Cretaceous. (C) 2012 Elsevier B.V. All rights reserved.
WOS关键词PRESSURE METAMORPHIC ROCKS ; COESITE-BEARING ZIRCON ; EAST-CENTRAL CHINA ; O-ISOTOPE EVIDENCE ; LU FAULT ZONE ; IN-WHITE MICA ; ULTRAHIGH-PRESSURE ; OROGENIC BELT ; DABIE MOUNTAINS ; SOUTH CHINA
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000312684000022
出版者ELSEVIER SCIENCE BV
资助机构Chinese 973 project(2009CB825006) ; Chinese 973 project(2009CB825006) ; National Natural Science Foundation of China(41173017 ; National Natural Science Foundation of China(41173017 ; Chinese Geological Survey Bureau(SinoProbe-05-04 ; Chinese Geological Survey Bureau(SinoProbe-05-04 ; Ministry of Education of China(IRT0441 ; Ministry of Education of China(IRT0441 ; Special Fund for Basic Scientific Research of Central Colleges, China University of Geosciences (Wuhan) ; Special Fund for Basic Scientific Research of Central Colleges, China University of Geosciences (Wuhan) ; 40873043 ; 40873043 ; 1212011120162) ; 1212011120162) ; B07039 ; B07039 ; 90714010 ; 90714010 ; NCET-06-0659) ; NCET-06-0659) ; 40772042 ; 40772042 ; 40521001) ; 40521001) ; Chinese 973 project(2009CB825006) ; Chinese 973 project(2009CB825006) ; National Natural Science Foundation of China(41173017 ; National Natural Science Foundation of China(41173017 ; Chinese Geological Survey Bureau(SinoProbe-05-04 ; Chinese Geological Survey Bureau(SinoProbe-05-04 ; Ministry of Education of China(IRT0441 ; Ministry of Education of China(IRT0441 ; Special Fund for Basic Scientific Research of Central Colleges, China University of Geosciences (Wuhan) ; Special Fund for Basic Scientific Research of Central Colleges, China University of Geosciences (Wuhan) ; 40873043 ; 40873043 ; 1212011120162) ; 1212011120162) ; B07039 ; B07039 ; 90714010 ; 90714010 ; NCET-06-0659) ; NCET-06-0659) ; 40772042 ; 40772042 ; 40521001) ; 40521001) ; Chinese 973 project(2009CB825006) ; Chinese 973 project(2009CB825006) ; National Natural Science Foundation of China(41173017 ; National Natural Science Foundation of China(41173017 ; Chinese Geological Survey Bureau(SinoProbe-05-04 ; Chinese Geological Survey Bureau(SinoProbe-05-04 ; Ministry of Education of China(IRT0441 ; Ministry of Education of China(IRT0441 ; Special Fund for Basic Scientific Research of Central Colleges, China University of Geosciences (Wuhan) ; Special Fund for Basic Scientific Research of Central Colleges, China University of Geosciences (Wuhan) ; 40873043 ; 40873043 ; 1212011120162) ; 1212011120162) ; B07039 ; B07039 ; 90714010 ; 90714010 ; NCET-06-0659) ; NCET-06-0659) ; 40772042 ; 40772042 ; 40521001) ; 40521001) ; Chinese 973 project(2009CB825006) ; Chinese 973 project(2009CB825006) ; National Natural Science Foundation of China(41173017 ; National Natural Science Foundation of China(41173017 ; Chinese Geological Survey Bureau(SinoProbe-05-04 ; Chinese Geological Survey Bureau(SinoProbe-05-04 ; Ministry of Education of China(IRT0441 ; Ministry of Education of China(IRT0441 ; Special Fund for Basic Scientific Research of Central Colleges, China University of Geosciences (Wuhan) ; Special Fund for Basic Scientific Research of Central Colleges, China University of Geosciences (Wuhan) ; 40873043 ; 40873043 ; 1212011120162) ; 1212011120162) ; B07039 ; B07039 ; 90714010 ; 90714010 ; NCET-06-0659) ; NCET-06-0659) ; 40772042 ; 40772042 ; 40521001) ; 40521001)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84124]  
专题中国科学院地质与地球物理研究所
通讯作者Wu, Yuanbao
作者单位1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Fac Earth Sci, Wuhan 430074, Peoples R China
2.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
3.Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Xie, Shiwen,Wu, Yuanbao,Zhang, Zeming,et al. U-Pb ages and trace elements of detrital zircons from Early Cretaceous sedimentary rocks in the Jiaolai Basin, north margin of the Sulu UHP terrane: Provenances and tectonic implications[J]. LITHOS,2012,154:346-360.
APA Xie, Shiwen.,Wu, Yuanbao.,Zhang, Zeming.,Qin, Yacao.,Liu, Xiaochi.,...&Yang, Saihong.(2012).U-Pb ages and trace elements of detrital zircons from Early Cretaceous sedimentary rocks in the Jiaolai Basin, north margin of the Sulu UHP terrane: Provenances and tectonic implications.LITHOS,154,346-360.
MLA Xie, Shiwen,et al."U-Pb ages and trace elements of detrital zircons from Early Cretaceous sedimentary rocks in the Jiaolai Basin, north margin of the Sulu UHP terrane: Provenances and tectonic implications".LITHOS 154(2012):346-360.

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