IOCAS-IR  > 深海极端环境与生命过程研究中心
Statistical analysis on secular records of igneous geochemistry: Implication for the early Archean plate tectonics
Liu, He1,2,3; Sun, Wei-dong1,2,3; Deng, Jianghong1,2,3
2020
Source PublicationGEOLOGICAL JOURNAL
ISSN0072-1050
Volume55Issue:1Pages:994-1002
Corresponding AuthorSun, Wei-dong(weidongsun@qdio.ac.cn)
AbstractIn recent years, application of statistical analysis to a sufficiently large geochemical database has become more and more popular to reveal the onset and evolution of plate tectonics as a consequence of the development of computer science and storage technology. Here, we introduce a robust statistical method to process a filtered geochemical dataset including predominantly continental basaltic rocks through Earth's history. The results show that the average Sr concentrations gradually increased from 3.8 to 0 Ga, indicating a progressively growing depth of magma source as a result of secular cooling of the mantle. However, the average La/Yb and Sm/Yb ratios only started to increase at ca. 3.0 Ga. Considering the La-Yb and Sm-Yb fractionations are commonly attributed to the residual garnet crystallization, we interpreted that the geotherm of the magma source of continental basaltic rocks before 3.0 Ga might be higher than the stability limit of garnet. As such, there were little or no garnets in the residue during partial melting of the upwelling asthenospheric mantle or mantle plumes before 3.0 Ga, which also implied a higher continental geotherm during that time. Such a high geotherm could not support the formation of contemporaneous high-pressure or medium-pressure TTGs (tonalite-trondhjemite-granodiorite) by vertical tectonic models associated with upwelling mantle heating or delaminated lower crust melting in the early Archean. We therefore conclude that the plate tectonics had occurred by ca. 3.8 Ga in a hot subduction style and contributed to the formations of high- and medium-pressure TTGs subsequently.
Keywordcontinental basaltic rocks garnet geotherm plate tectonics statistical analysis
DOI10.1002/gj.3484
Indexed BySCI
Language英语
Funding ProjectNSFC[41473029] ; NSFC[41421062] ; NSFC[91328204] ; CAS[XDB18020000] ; MOST of China[2016YFC0600408]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000508025400057
PublisherWILEY
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/164416
Collection深海极端环境与生命过程研究中心
Corresponding AuthorSun, Wei-dong
Affiliation1.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
First Author AffilicationChinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res
Corresponding Author AffilicationChinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res
Recommended Citation
GB/T 7714
Liu, He,Sun, Wei-dong,Deng, Jianghong. Statistical analysis on secular records of igneous geochemistry: Implication for the early Archean plate tectonics[J]. GEOLOGICAL JOURNAL,2020,55(1):994-1002.
APA Liu, He,Sun, Wei-dong,&Deng, Jianghong.(2020).Statistical analysis on secular records of igneous geochemistry: Implication for the early Archean plate tectonics.GEOLOGICAL JOURNAL,55(1),994-1002.
MLA Liu, He,et al."Statistical analysis on secular records of igneous geochemistry: Implication for the early Archean plate tectonics".GEOLOGICAL JOURNAL 55.1(2020):994-1002.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, He]'s Articles
[Sun, Wei-dong]'s Articles
[Deng, Jianghong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, He]'s Articles
[Sun, Wei-dong]'s Articles
[Deng, Jianghong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, He]'s Articles
[Sun, Wei-dong]'s Articles
[Deng, Jianghong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.