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Petrogenesis and implications of Early Jurassic igneous rocks from eastern Hebei Province
Chen JingZhi1,2; Jiang Neng1,2; Fan WenBo3; Hu Jun1,2
2020
Source PublicationACTA PETROLOGICA SINICA
ISSN1000-0569
Volume36Issue:3Pages:913-924
AbstractThe 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.
KeywordNorth China Craton Eastern Hebei Province Early Jurassic Igneous rocks
DOI10.18654/1000-0569/2020.03.16
WOS KeywordNORTH CHINA CRATON ; LU-HF ; GEOCHEMISTRY ; DESTRUCTION ; MAGMATISM ; GRANITES ; AREA
Language英语
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000533620200016
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96730
Collection岩石圈演化国家重点实验室
Corresponding AuthorChen JingZhi
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Northwestern Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
First Author AffilicationState Key Laboratory of Lithospheric Evolution
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution
Recommended Citation
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.
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