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Metamorphic evolution and geochronology of the tectonic melange of the Dongbatu and Mogutai blocks, middle Dunhuang orogenic belt, northwestern China

文献类型：期刊论文

作者Wang, Hao Y. C.1,2; Zhang, Qian W. L.2; Lu, Jun-Sheng2,3; Chen, Hong-Xu2; Liu, Jia-Hui2; Zhang, Hui C. G.2; Van Tho Pham2; Peng, Tao2; Wu, Chun-Ming2
刊名GEOSPHERE
出版日期2018-04-01
卷号14期号:2页码:883-906
ISSN号1553-040X
DOI10.1130/GES01514.1
文献子类Article
英文摘要Mafic granulite and amphibolite in the Dongbatu and Mogutai blocks, middle Dunhuang orogenic belt, northwest China, southernmost Central Asian orogenic belt, occur as lenses within the matrix of metapelite and marble, exhibiting typical block-in-matrix fabrics of tectonic melange. Three stages of metamorphic mineral assemblages were identified in these lenses. Clockwise metamorphic pressure-temperature (P-T) paths were obtained through geothermobarometry and thermodynamic pseudosection modeling, passing from 656 degrees C and 10.9 kbar through 830 degrees C and 16.5 kbar to 657 degrees C and 4.9 kbar for the mafic granulite, and from 564-645 degrees C and 3.2-9.6 kbar through 634727 degrees C and 6.1-14.2 kbar to 615-664 degrees C and 3.2-4.2 kbar for the amphibolites, respectively. Metamorphic peak P-T conditions in the metapelitic country rocks were estimated to be 635-675 degrees C and 6.0-6.9 kbar. The metamorphic peak of the mafic granulite approaches the high P-T facies series, indicative of a subduction zone. Secondary-ion mass spectrometry and laser ablationinductively coupled plasma-mass spectrometry U-Pb dating of metamorphic zircons suggests that the metamorphic event occurred between ca. 420 and 372 Ma. These data further certify that the subduction of the continental margin and subsequent uplift of the Dunhuang orogenic belt represent a long-lived tectono-metamorphic event in the Paleozoic.
WOS关键词ZIRCON U-PB ; GARNET-BIOTITE GEOTHERMOMETER ; CONSISTENT THERMODYNAMIC DATA ; HIGH-PRESSURE GRANULITES ; TEMPERATURE TIME PATHS ; EASTERN TARIM CRATON ; NW CHINA ; ACCRETIONARY OROGENESIS ; EMPIRICAL CALIBRATION ; REGIONAL METAMORPHISM
WOS研究方向Geology
语种英语
WOS记录号WOS:000433391400025
出版者GEOLOGICAL SOC AMER, INC
资助机构National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; National Natural Science Foundation of China(41730215) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC036) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; National Postdoctoral Program for Innovative Talents(BX201700240) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605) ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences(Kai201605)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88250]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Wu, Chun-Ming
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, POB 4588, Beijing 100049, Peoples R China
3.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, 229 North Taibai St, Xian 710069, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Hao Y. C.,Zhang, Qian W. L.,Lu, Jun-Sheng,et al. Metamorphic evolution and geochronology of the tectonic melange of the Dongbatu and Mogutai blocks, middle Dunhuang orogenic belt, northwestern China[J]. GEOSPHERE,2018,14(2):883-906.
APA Wang, Hao Y. C..,Zhang, Qian W. L..,Lu, Jun-Sheng.,Chen, Hong-Xu.,Liu, Jia-Hui.,...&Wu, Chun-Ming.(2018).Metamorphic evolution and geochronology of the tectonic melange of the Dongbatu and Mogutai blocks, middle Dunhuang orogenic belt, northwestern China.GEOSPHERE,14(2),883-906.
MLA Wang, Hao Y. C.,et al."Metamorphic evolution and geochronology of the tectonic melange of the Dongbatu and Mogutai blocks, middle Dunhuang orogenic belt, northwestern China".GEOSPHERE 14.2(2018):883-906.

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