Genesis of High Ba-Sr Yashan Intrusion from the Jiaodong Peninsula,Eastern China:Implications for the Destruction of the North China Craton
文献类型：CNKI期刊论文
| 作者 | Guozhi Xie; Lipeng Zhang; Jie Li ; Zhongyi Bao; Kun Wang; Qian Chen; Li Wang; Jingwei Wang
|
| 发表日期 | 2021-12-03 |
| 出处 | Journal of Earth Science
 |
| 关键词 | Yashan magmatic intrusion high Ba-Sr Jiaodong Peninsula crust-mantle interaction North China Craton |
| 英文摘要 | The origin of the Mesozoic high Ba-Sr(HBS) granitic magmatism in the Jiaodong Peninsula remains controversial in petrogenesis models and geodynamic settings.Here,we report zircon UPb age,trace element and oxygen isotope compositions,and whole-rock major-trace element and Sr-Nd isotope compositions of the HBS Yashan granodiorite.The zircon U-Pb age of ～118 Ma denotes that the Yashan granodiorite belongs to the Weideshan-stage magmatic activity,which is consistent with the age of Mo mineralization in the Yashan intrusion.The low Sr/Y(48.8–115) and high(La/Yb)N(23.8–50.4)ratios of the Yashan granodiorite are analogous to adakitic features derived from the lower-crust.This is also supported by the whole-rock initial87 Sr/86 Sr ratios(0.709 6 – 0.710 3) and zircon δ18 O values(6.79‰–8.03‰).Contemporaneous mantle-derived mafic microgranular enclaves indicate the involvement of the metasomatized lithospheric mantle.The high magma oxygen fugacity of the Yashan intrusion as indicated by high zircon Ce4+/Ce3+values suggests the involvement of plate subduction.The obviously lower Dy/Yb,La/Yb and Sr/Y ratios of magmatic rocks in the Weideshan-stage than those in the early-stage imply lithospheric thinning of the eastern North China Craton.We propose that the Yashan HBS granodiorite was formed by crust-mantle interactions during slab rollback. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the National Key R&D Program of China (No.2016YFC0600408) ; the Strategic Priority Research Program of the Chinese Academy of Sciences (No.XDB42020203) |
| 卷 | v.33期:03页:31-44 |
| 语种 | 英文; |
| 分类号 | P587;P542 |
| ISSN号 | 1674-487X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187574]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.SchoolofResources,HebeiGEOUniversity 2.RizhaoNaturalResourcesandPlanningBureau 3.CenterofDeepSeaResearch,InstituteofOceanology,CenterforOceanMega-Science,ChineseAcademyofSciences 4.SchoolofMarineSciences,UniversityofChineseAcademyofSciences 5.LaboratoryforMarineMineralResources,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 6.ShandongProvincialNo.6ExplorationInstituteofGeologyandMineralResources |
| 推荐引用方式 GB/T 7714 | Guozhi Xie,Lipeng Zhang,Jie Li,et al. Genesis of High Ba-Sr Yashan Intrusion from the Jiaodong Peninsula,Eastern China:Implications for the Destruction of the North China Craton. 2021. |
入库方式： OAI收割
来源：海洋研究所
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