GYIG OpenIR  > 矿床地球化学国家重点实验室
U–Pb zircon geochronology, geochemistry and geodynamic significance of basaltic trachyandesites and trachyandesites from the Jianchang area, western Liaoning Province, China
GuangYing Feng; Shen Liu; CaiXia Feng; YuHong Yang; Chaogui Yang; Liang Tang; JingSui Yang
2015
发表期刊Journal of Asian Earth Sciences
卷号110页码:141-150
摘要

Basaltic trachyandesites and trachyandesites from the northern North China Craton (NCC) provide an excellent opportunity to examine the nature of their mantle source and the secular evolution of the underlying mantle lithosphere. In addition, our study of these rocks helps to constrain the age and mechanism of NCC lithospheric destruction. In this paper, we report geochronological, geochemical, and Sr–Nd isotopic analyses of the Niujiaogou (NJG) basaltic trachyandesites and trachyandesites. Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) zircon U–Pb dating yielded an age of 120.7 ± 0.8 million years, which we regard as the crystallization age of the rocks. Analysed whole-rock samples are enriched in both light rare earth elements and large ion lithophile elements (i.e. Rb, Sr and Ba), but depleted in heavy rare earth elements and high field strength elements (i.e. Nb, Ta, and Ti), with slightly negative to positive Eu anomalies (Eu/Eu* = 0.73–1.09). The NJG basaltic trachyandesites and trachyandesites are characterized by low MgO (2.42–3.69 wt.%), Cr (10.3–24.6 ppm) and Ni (17.1–25.6 ppm), suggesting that they may have originated from an extremely evolved magma. In addition, the rocks display negative εNd (t) values (−12.2 to −8.5), which indicate that they were derived from a common lithosphere mantle that had previously been metasomatized by fluids related to subduction of Paleo-Asian Ocean sedimentary units. This magmatism may have been induced by large-scale, transtensional strike-slip on the Tan-Lu fault zone. In accord with earlier studies, these findings provide evidence that the lithospheric mantle source beneath western Liaoning Province was not changed much by the extensive Mesozoic magmatism during Triassic to early Cretaceous time.

关键词Basaltic TrachyAndesites And TrachyAndesites cretaceous geochronology sr–nd Isotopes ncc
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/42920512-1/9521
专题矿床地球化学国家重点实验室
作者单位1.CARMA, State Key Laboratory of Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
2.State Key Laboratory of Continental Dynamics and Department of Geology, Department of Geology, Northwest University, Xi’an 710069, China
3.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
推荐引用方式
GB/T 7714
GuangYing Feng,Shen Liu,CaiXia Feng,等. U–Pb zircon geochronology, geochemistry and geodynamic significance of basaltic trachyandesites and trachyandesites from the Jianchang area, western Liaoning Province, China[J]. Journal of Asian Earth Sciences,2015,110:141-150.
APA GuangYing Feng.,Shen Liu.,CaiXia Feng.,YuHong Yang.,Chaogui Yang.,...&JingSui Yang.(2015).U–Pb zircon geochronology, geochemistry and geodynamic significance of basaltic trachyandesites and trachyandesites from the Jianchang area, western Liaoning Province, China.Journal of Asian Earth Sciences,110,141-150.
MLA GuangYing Feng,et al."U–Pb zircon geochronology, geochemistry and geodynamic significance of basaltic trachyandesites and trachyandesites from the Jianchang area, western Liaoning Province, China".Journal of Asian Earth Sciences 110(2015):141-150.
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
U–Pb zircon geochron(1565KB)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
[GuangYing Feng]的文章
[Shen Liu]的文章
[CaiXia Feng]的文章
百度学术
百度学术中相似的文章
[GuangYing Feng]的文章
[Shen Liu]的文章
[CaiXia Feng]的文章
必应学术
必应学术中相似的文章
[GuangYing Feng]的文章
[Shen Liu]的文章
[CaiXia Feng]的文章
相关权益政策
暂无数据
收藏/分享
文件名: U–Pb zircon geochronology, geochemistry and geodynamic significance of basaltic trachyandesites and trachyandesites from the Jianchang area, western Liaoning Province, China.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。