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Petrogenesis and implications of Early Jurassic igneous rocks from eastern Hebei Province

文献类型：期刊论文

作者Chen JingZhi2,3; Jiang Neng2,3; Fan WenBo1; Hu Jun2,3
刊名ACTA PETROLOGICA SINICA
出版日期2020
卷号36期号:3页码:913-924
关键词North China Craton Eastern Hebei Province Early Jurassic Igneous rocks
ISSN号1000-0569
DOI10.18654/1000-0569/2020.03.16
英文摘要The eastern Hebei area, which is located at the eastern part of the North China Craton, preserves voluminous Mesozoic igneous rocks that are well indicators of destruction of the North China Craton. Based on SIMS zircon U-Pb dating, we obtained 192. 0 +/- 2. 4Ma and 190. 5 +/- 1. 3Ma for the Shepantu granite and Longxumen diorite in Qinglong region. In combination with a number of ages ranging from 190Ma to 199Ma previously published, it demonstrates that Early Jurassic is an important period of magmatism in eastern Hebei area. The Early Jurassic igneous rocks in Qinglong region consist of intermediate-felsic rocks with various degrees of crystal fractionation. Their zircon epsilon(Hf)(t) values are higher than that of the ancient lower crust of the North China Craton, precluding complete derivation from melting of the ancient lower crust. On the other hand, their zircon epsilon(Hf)( t) values show a limited variation, combined with excessive low Cr and Ni content, arguing against direct mixing of crustal- and mantle-derived magmas. Given that addition of depleted mantle materials was involved in the Triassic igneous rocks, it is suggested that the Early Jurassic igneous rocks were derived by partial melting of both juvenile lower crust formed by Triassic underplating and ancient lower crust.
WOS关键词NORTH CHINA CRATON ; LU-HF ; GEOCHEMISTRY ; DESTRUCTION ; MAGMATISM ; GRANITES ; AREA
WOS研究方向Geology
语种英语
WOS记录号WOS:000533620200016
出版者SCIENCE PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/96730]  
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Chen JingZhi
作者单位1.Northwestern Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Chen JingZhi,Jiang Neng,Fan WenBo,et al. Petrogenesis and implications of Early Jurassic igneous rocks from eastern Hebei Province[J]. ACTA PETROLOGICA SINICA,2020,36(3):913-924.
APA Chen JingZhi,Jiang Neng,Fan WenBo,&Hu Jun.(2020).Petrogenesis and implications of Early Jurassic igneous rocks from eastern Hebei Province.ACTA PETROLOGICA SINICA,36(3),913-924.
MLA Chen JingZhi,et al."Petrogenesis and implications of Early Jurassic igneous rocks from eastern Hebei Province".ACTA PETROLOGICA SINICA 36.3(2020):913-924.

入库方式： OAI收割

来源：地质与地球物理研究所

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