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A new 1.32 Ga Tianshui mafic sill in the Liaodong area and its relations to the Yanliao large igneous province in the northern North China Craton

文献类型：期刊论文

作者Wang, Xin Ping2,3; Peng, Peng1; Wang, Chong1
刊名PRECAMBRIAN RESEARCH
出版日期2022-02-01
卷号369页码:18
关键词Yanliao large igneous province Liaodong area Mesoproterozoic Mafic sill
ISSN号0301-9268
DOI10.1016/j.precamres.2021.106535
英文摘要A new 1.32 Ga Tianshui mafic sill was identified in the Liaodong area, which enlarges the scale of the Yanliao large igneous province (LIP, extending > 600 km) in the North China Craton. It intrudes concordantly into limestone layers and is overlain by Neoproterozoic strata. SIMS baddeleyite Pb-Pb dating on two coarse-grained gabbros yields weighted mean Pb-207/Pb-206 ages of 1324 +/- 2 Ma (n = 20, MSDW = 1.5) and 1326 +/- 5 Ma (n = 9, MSDW = 1.3), similar to those of mafic sills in the Yanliao LIP. The Tianshui mafic sill shows a similar E-MORB geochemical character as the mafic sills in the Yanliao LIP, including tholeiitic composition, enriched light rare earth elements (La/Yb-N = 2.45-3.77), and large ion lithophile elements, but depleted high field strength elements, positive baddeleyite epsilon Hft values of 3.59-10.96, with a peak of 6.07, and negative whole-rock epsilon Ndt values of-1.8 to-0.6, with an average of-1.3, indicative of an enriched mantle source. The host limestone layers are 800 m thick and possibly contemporaneous with the Mesoproterozoic Gaoyuzhuang Formation of the Liaoxi area. The 1.32 Ga Yanliao mafic sills underwent extensive crystallization differentiation controlled by olivine, clinopyroxene, and plagioclase. They were generated at a high primary temperature of ~1550 ?C and crystallized at ~1140 ?C at 0.24 kbar, which could be related to the mantle plume magmatism.
WOS关键词HF ISOTOPIC COMPOSITIONS ; PB ZIRCON GEOCHRONOLOGY ; U-PB ; JI BELT ; LIAOHE GROUP ; EASTERN BLOCK ; ANSHAN AREA ; LU-HF ; LIAONING PROVINCE ; DETRITAL ZIRCONS
资助项目Natural Science Foundation of China[NSFC 41890833] ; Shanxi Normal University[2021L271] ; Shanxi Scholarship Council of China[2021-096] ; Modern Col-lege of Humanities and Sciences of Shanxi Normal University[2020JCYJ27]
WOS研究方向Geology
语种英语
WOS记录号WOS:000792401900001
出版者ELSEVIER
资助机构Natural Science Foundation of China ; Natural Science Foundation of China ; Shanxi Normal University ; Shanxi Normal University ; Shanxi Scholarship Council of China ; Shanxi Scholarship Council of China ; Modern Col-lege of Humanities and Sciences of Shanxi Normal University ; Modern Col-lege of Humanities and Sciences of Shanxi Normal University ; Natural Science Foundation of China ; Natural Science Foundation of China ; Shanxi Normal University ; Shanxi Normal University ; Shanxi Scholarship Council of China ; Shanxi Scholarship Council of China ; Modern Col-lege of Humanities and Sciences of Shanxi Normal University ; Modern Col-lege of Humanities and Sciences of Shanxi Normal University ; Natural Science Foundation of China ; Natural Science Foundation of China ; Shanxi Normal University ; Shanxi Normal University ; Shanxi Scholarship Council of China ; Shanxi Scholarship Council of China ; Modern Col-lege of Humanities and Sciences of Shanxi Normal University ; Modern Col-lege of Humanities and Sciences of Shanxi Normal University ; Natural Science Foundation of China ; Natural Science Foundation of China ; Shanxi Normal University ; Shanxi Normal University ; Shanxi Scholarship Council of China ; Shanxi Scholarship Council of China ; Modern Col-lege of Humanities and Sciences of Shanxi Normal University ; Modern Col-lege of Humanities and Sciences of Shanxi Normal University
源URL[http://ir.iggcas.ac.cn/handle/132A11/105906]  
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Wang, Xin Ping
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Shanxi Normal Univ, Sch Geog Sci, Taiyuan 030092, Shanxi, Peoples R China
3.Sci Shanxi Normal Univ, Modern Coll Humanities & Sci, Linfen 041000, Shanxi, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xin Ping,Peng, Peng,Wang, Chong. A new 1.32 Ga Tianshui mafic sill in the Liaodong area and its relations to the Yanliao large igneous province in the northern North China Craton[J]. PRECAMBRIAN RESEARCH,2022,369:18.
APA Wang, Xin Ping,Peng, Peng,&Wang, Chong.(2022).A new 1.32 Ga Tianshui mafic sill in the Liaodong area and its relations to the Yanliao large igneous province in the northern North China Craton.PRECAMBRIAN RESEARCH,369,18.
MLA Wang, Xin Ping,et al."A new 1.32 Ga Tianshui mafic sill in the Liaodong area and its relations to the Yanliao large igneous province in the northern North China Craton".PRECAMBRIAN RESEARCH 369(2022):18.

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来源：地质与地球物理研究所

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