High oxygen fugacity magma:implication for the destruction of the North China Craton
文献类型：CNKI期刊论文
| 作者 | Zhekun Zhang; Mingxing Ling; Lipeng Zhang; Saijun Sun; Weidong Sun
|
| 发表日期 | 2020-04-15 |
| 出处 | Acta Geochimica
 |
| 关键词 | High oxygen fugacity Decratonization North China Craton Plate subduction |
| 英文摘要 | The mechanism of lithospheric removal and destruction of the North China Craton(NCC) has been hotly debated for decades.It is now generally accepted that the subduction of the(Paleo)-Pacific plate played an important role in this process.However,how the plate subduction contributed to the craton destruction remains unclear.Here we report high oxygen fugacity(fO_2) characteristics of the Yunmengshan granite,e.g.,hematitemagnetite intergrowth supported by zircon Ce~(4+)/Ce~(3+)ratios and apatite Mn oxygen fugacity indicator.High fO_2 magmas are widely discovered in Late Mesozoic(160-130 Ma) adakitic rocks in central NCC.The origin of high fO_2 magma is likely related to the input of the "oxidized mantle components",which shows a dose connection between plate subduction and destruction of the craton.The research area is ～1500 km away from the current Pacific subduction zone.Considering the back-arc extension of Japan Sea since the Cretaceous,this distance may be shortened to ～800 km,which is still too far for normal plate subduction.Ridge subduction is the best candidate that was responsible for the large scale magmatism and the destruction of the NCC.Massive slab-derived fluids and/or melts were liberated into an overlying mantle wedge and modified the lithospheric mantle.Rollback of the subducting plate induced the large-scale upwelling of asthenospheric mantle and triggered the formation of extensive high fO_2 intraplate magmas. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | was supported by National Key R&D Program of China (2016YFC0600408) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (XDB18020102) ; Guangdong Natural Science Funds (2014A030306032 and 2015TQ01Z611) ; Youth Innovation Promotion Association CAS (2016315) |
| 卷 | v.39期:02页:3-13 |
| 语种 | 英文; |
| 分类号 | P542;P588.11 |
| ISSN号 | 2096-0956 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188248]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CenterofDeepSeaResearch,InstituteofOceanology,ChineseAcademyofSciences 2.CASKeyLaboratoryofMineralogyandMetallogeny,GuangzhouInstituteofGeochemistry,ChineseAcademyofSciences 3.UniversityofChineseAcademyofSciences 4.StateKeyLaboratoryofIsotopeGeochemistry,GuangzhouInstituteofGeochemistry,ChineseAcademyofSciences 5.LaboratoryforMarineMineralResources,QingdaoNationalLaboratoryforMarineScienceandTechnology |
| 推荐引用方式 GB/T 7714 | Zhekun Zhang,Mingxing Ling,Lipeng Zhang,et al. High oxygen fugacity magma:implication for the destruction of the North China Craton. 2020. |
入库方式： OAI收割
来源：海洋研究所
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