Zircon SHRIMP U-Pb dating of metamorphic complexes in the conjunction of the Greater and Lesser Xing'an ranges, NE China: Timing of formation and metamorphism and tectonic implications
文献类型：期刊论文
| 作者 | Miao, Laicheng1; Zhang, Fuqin1; Zhu, Mingshuai1; Liu, Dunyi2 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2015-12-15 |
| 卷号 | 114页码:634-648 |
| 关键词 | Zircon SHRIMP U-Pb age Metamorphic complex Jurassic metamorphism Greater Xing'an Range Northeast China |
| DOI | 10.1016/j.jseaes.2014.09.035 |
| 文献子类 | Article |
| 英文摘要 | Metamorphic complexes, including the Luomahu, Xinkailing and Fengshuigouhe groups, are scattered in the conjunction of the Greater and the Lesser Xing'an ranges, NE China, and have long been interpreted to represent the Precambrian basement of the so-called "Xing'an" and "Songnen" blocks although reliable evidence is lacking. Thin-section examination and mineral assemblage indicate that the protoliths of these metamorphic rocks are mainly meta-sedimentary and meta-volcanic rocks and have experienced greenschist- to amphibolite-facies metamorphism and strong deformation. Zircon SHRIMP U-Pb dating results of the metamorphic complexes and associated pre- or syn-kinematic veins constrained the formation and metamorphic ages of the Luomahuo Group at 175 +/- 3 Ma and 159 +/- 3 Ma, the Xingkailing Group at 200 +/- 2 Ma and 158 +/- 3 Ma, and the Fengshuigouhe Group at between 230-310 Ma and 170 +/- 3 Ma, respectively. Additionally, all these rocks contain some Late Paleozoic detrital or inherited zircons with ages between 290-390 Ma, but no Precambrian, even if Early Paleozoic, age information was detected from these metamorphic rocks. These new data suggest that the metamorphic complexes were formed during Mesozoic-Late Paleozoic period, rather than in Precambrian as previously inferred, and that all of them underwent metamorphism and deformation during Middle Jurassic between 170-160 Ma. Consequently, these metamorphic complexes are not basement rocks of the so-called Precambrian continental blocks. Instead, there are likely metamorphosed Late Paleozoic-Mesozoic accretionary complexes and/or arc terranes. These results, in combination with published data, illustrate an overall young trend from north to south in the tectonic evolution of the northern Xing'an region. Significantly, the Jurassic (170-160 Ma) metamorphism and deformation event firstly identified by this study from the metamorphic complexes likely recorded the coinstantaneous Mongol-Okhotsk collisional and thrusting event, implying the northern Xing'an region was in the fore-land setting during Middle Jurassic. The metamorphic complexes in the study area are either remnants of the detachment zones of the thrusting system or results of the far-field response of the collision event. (C) 2014 Elsevier Ltd. All rights reserved. |
| WOS关键词 | ASIAN OROGENIC BELT ; MESOZOIC VOLCANIC-ROCKS ; MONGOL-OKHOTSK OCEAN ; INNER-MONGOLIA ; SONGLIAO BASIN ; GEOLOGICAL SIGNIFICANCE ; CONTINENTAL GROWTH ; COLLISIONAL BELT ; DETRITAL ZIRCONS ; EMPLACEMENT AGE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000367858300003 |
| 资助机构 | National Natural Science Foundation of China(41273071) ; National Natural Science Foundation of China(41273071) ; National Natural Science Foundation of China(41273071) ; National Natural Science Foundation of China(41273071) ; Chinese SinoProbe Project(SinoProbe-08-01-02) ; Chinese SinoProbe Project(SinoProbe-08-01-02) ; Chinese SinoProbe Project(SinoProbe-08-01-02) ; Chinese SinoProbe Project(SinoProbe-08-01-02) ; Ministry of Science and Technology of China(2012FY120100) ; Ministry of Science and Technology of China(2012FY120100) ; Ministry of Science and Technology of China(2012FY120100) ; Ministry of Science and Technology of China(2012FY120100) ; National Natural Science Foundation of China(41273071) ; National Natural Science Foundation of China(41273071) ; National Natural Science Foundation of China(41273071) ; National Natural Science Foundation of China(41273071) ; Chinese SinoProbe Project(SinoProbe-08-01-02) ; Chinese SinoProbe Project(SinoProbe-08-01-02) ; Chinese SinoProbe Project(SinoProbe-08-01-02) ; Chinese SinoProbe Project(SinoProbe-08-01-02) ; Ministry of Science and Technology of China(2012FY120100) ; Ministry of Science and Technology of China(2012FY120100) ; Ministry of Science and Technology of China(2012FY120100) ; Ministry of Science and Technology of China(2012FY120100) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62105]  |
| 专题 | 地质与地球物理研究所_特提斯研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Geol Sci, Beijing SHRIMP Ctr, Inst Geol, Beijing 100037, Peoples R China |
| 推荐引用方式 GB/T 7714 | Miao, Laicheng,Zhang, Fuqin,Zhu, Mingshuai,et al. Zircon SHRIMP U-Pb dating of metamorphic complexes in the conjunction of the Greater and Lesser Xing'an ranges, NE China: Timing of formation and metamorphism and tectonic implications[J]. JOURNAL OF ASIAN EARTH SCIENCES,2015,114:634-648. |
| APA | Miao, Laicheng,Zhang, Fuqin,Zhu, Mingshuai,&Liu, Dunyi.(2015).Zircon SHRIMP U-Pb dating of metamorphic complexes in the conjunction of the Greater and Lesser Xing'an ranges, NE China: Timing of formation and metamorphism and tectonic implications.JOURNAL OF ASIAN EARTH SCIENCES,114,634-648. |
| MLA | Miao, Laicheng,et al."Zircon SHRIMP U-Pb dating of metamorphic complexes in the conjunction of the Greater and Lesser Xing'an ranges, NE China: Timing of formation and metamorphism and tectonic implications".JOURNAL OF ASIAN EARTH SCIENCES 114(2015):634-648. |
入库方式： OAI收割
来源：地质与地球物理研究所
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