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Evidence for an upwelling mantle plume beneath the Songliao Basin, Northeast China
He, CS (He, Chuansong)
Source PublicationPHYSICS OF THE EARTH AND PLANETARY INTERIORS
2019
Volume297Issue:0Pages:106316
DOI10.1016/j.pepi.2019.106316
Abstract

A mushroom-like low-velocity body (MLLVB) was defined by tomography beneath Northeast China, which may be linked to a vestige of the Mesozoic upwelling mantle plume. However, multiple lines of evidence indicate that the necessary condition of the upwelling is that the upwelling mantle plume has a temperature sufficiently higher than that of the surrounding mantle. The upwelling mantle plume cannot be defined only based on the low-velocity structure. To investigate this issue, I conducted common conversion point (CCP) stacking of receiver functions in Northeast China and designed six CCP stacking profiles crossing Northeast China. The results show that when the CCP stacking profiles cross the location of the MLLVB, the topography of the 410 and 660 km discontinuities did not exhibit obvious variations; instead, two 520 km discontinuities merged into a single discontinuity, which indicates that the MLLVB had an upwelling temperature condition. The CCP stacking image of the receiver functions also reveals a deepening of the 410 km discontinuity and shallowing of the 660 km discontinuity at the center of the Songliao Basin along the 45 degrees N profiles, which might be associated with the Mesozoic upwelling mantle plume.

Subject AreaGeochemistry & Geophysics
WOS IDWOS:000501404600002
Language英语
Indexed BySCI
KeywordTransition Zone Ne China Seismic Evidence System Mg2sio4-fe2sio4 Volcanic-rocks Topography Discontinuity Extension Geochemistry Petrogenesis
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
Cooperation Status国内
ISSN0031-9201
URL查看原文
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9052
Collection图书馆
Corresponding AuthorHe, CS (He, Chuansong)
Affiliation1.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
2.Chinese Acad Sci, Key Lab Continental Collis & Plateau Uplift, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
He, CS . Evidence for an upwelling mantle plume beneath the Songliao Basin, Northeast China[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2019,297(0):106316.
APA He, CS .(2019).Evidence for an upwelling mantle plume beneath the Songliao Basin, Northeast China.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,297(0),106316.
MLA He, CS ."Evidence for an upwelling mantle plume beneath the Songliao Basin, Northeast China".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 297.0(2019):106316.
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