GYIG OpenIR  > 矿床地球化学国家重点实验室
Zircon U–Pb geochronological, geochemical, and Sr–Nd isotope data for Early Cretaceous mafic dykes in the Tancheng–Lujiang Fault area of the Shandong Province, China: Constraints on the timing of magm
Shen Liu; Caixia Feng; Ruizhong Hu; Mingguo Zhai; han Gao; Shaocong Lai; Jun Yan; Ian M. Coulson; Haibo Zou
2015
发表期刊Journal of Asian Earth Sciences
卷号98页码:247-260
摘要

The timing and source of magmatism that formed Early Cretaceous dolerite dykes in the Tancheng–Lujiang (Tan–Lu) Fault area of the southeastern North China Craton was determined using geochronological, geochemical, and whole-rock Sr–Nd isotopic data. Laser ablation–inductively coupled plasma–mass (LA–ICP–MS) spectrometry U–Pb analysis of zircon yielded consistent ages of 129.6 ± 0.7, 126.8 ± 0.7, 125.5 ± 0.7, 124.9 ± 0.9, 126.4 ± 0.7, and 125.5 ± 0.7 Ma for six samples of the mafic dykes within the NCC. The K2O + Na2O concentrations (5.02–5.21 wt.%) of the dykes indicate they are alkaline and these dykes have K2O concentrations (2.35–2.48 wt.%) that indicate they are shoshonitic. These dolerites are also characterized by high and wide ranging (La/Yb)N (14.5–36.0), have slightly negative Eu anomalies (δEu = 0.70–0.91) and positive Ba, U, K, and Pb anomalies, and are depleted in the high field strength elements (Nb, Ta, P, and Ti). In addition, these mafic dykes are characterized by high radiogenic Sr [(87Sr/86Sr)i = 0.7099–0.7100] and negative εNd (t) values (−14.4 to −13.7). These data suggest that the magmas that formed the dykes were derived through the partial melting (12.0–15.0%) of an enriched region of the mantle that was hybridized during interaction with subducted sedimentary rocks from the Yangtze Craton. The parental magmas then fractionated olivine and Fe–Ti oxides during ascent and underwent negligible crustal contamination during magma emplacement. These mafic magmas were finally emplaced as dyke swarms associated with lithospheric extension.

关键词Age origin hybridization tan–lu Fault ncc yangtze Craton
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/9543
专题矿床地球化学国家重点实验室
作者单位1.State Key Laboratory of Continental Dynamics and Department of Geology, Northwest University, Xi’an 710069, China
2.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
3.State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
4.Solid Earth Studies Laboratory, Department of Geology, University of Regina, Regina, Saskatchewan S4S 0A2, Canada
5.Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
推荐引用方式
GB/T 7714
Shen Liu,Caixia Feng,Ruizhong Hu,等. Zircon U–Pb geochronological, geochemical, and Sr–Nd isotope data for Early Cretaceous mafic dykes in the Tancheng–Lujiang Fault area of the Shandong Province, China: Constraints on the timing of magm[J]. Journal of Asian Earth Sciences,2015,98:247-260.
APA Shen Liu.,Caixia Feng.,Ruizhong Hu.,Mingguo Zhai.,han Gao.,...&Haibo Zou.(2015).Zircon U–Pb geochronological, geochemical, and Sr–Nd isotope data for Early Cretaceous mafic dykes in the Tancheng–Lujiang Fault area of the Shandong Province, China: Constraints on the timing of magm.Journal of Asian Earth Sciences,98,247-260.
MLA Shen Liu,et al."Zircon U–Pb geochronological, geochemical, and Sr–Nd isotope data for Early Cretaceous mafic dykes in the Tancheng–Lujiang Fault area of the Shandong Province, China: Constraints on the timing of magm".Journal of Asian Earth Sciences 98(2015):247-260.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Zircon U–Pb geochron(4723KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Shen Liu]的文章
[Caixia Feng]的文章
[Ruizhong Hu]的文章
百度学术
百度学术中相似的文章
[Shen Liu]的文章
[Caixia Feng]的文章
[Ruizhong Hu]的文章
必应学术
必应学术中相似的文章
[Shen Liu]的文章
[Caixia Feng]的文章
[Ruizhong Hu]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Zircon U–Pb geochronological, geochemical, and Sr–Nd isotope data for Early Cretaceous mafic dykes in the Tancheng–Lujiang Fault area of the Shandong Province, China_ Constraints on the timing of magmatism and magma genesis.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。