气候变化领域集成服务门户(CCPortal): Evidence for an upwelling mantle plume beneath the Songliao Basin, Northeast China

CCPortal

DOI	10.1016/j.pepi.2019.106316
	Evidence for an upwelling mantle plume beneath the Songliao Basin, Northeast China
	He, Chuansong
通讯作者	He, CS (通讯作者)
发表日期	2019
ISSN	0031-9201
EISSN	1872-7395
卷号	297
英文摘要	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.
关键词	TRANSITION ZONE NE CHINA SEISMIC EVIDENCE SYSTEM MG2SIO4-FE2SIO4 VOLCANIC-ROCKS TOPOGRAPHY DISCONTINUITY EXTENSION GEOCHEMISTRY PETROGENESIS
英文关键词	Tomography; Mushroom-like low-velocity anomaly; CCP stacking of receiver functions; Upper mantle discontinuity; Upwelling mantle plume
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000501404600002
来源期刊	PHYSICS OF THE EARTH AND PLANETARY INTERIORS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259414
推荐引用方式 GB/T 7714	He, Chuansong. Evidence for an upwelling mantle plume beneath the Songliao Basin, Northeast China[J]. 中国科学院青藏高原研究所,2019,297.
APA	He, Chuansong.(2019).Evidence for an upwelling mantle plume beneath the Songliao Basin, Northeast China.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,297.
MLA	He, Chuansong."Evidence for an upwelling mantle plume beneath the Songliao Basin, Northeast China".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 297(2019).

条目包含的文件
条目无相关文件。

个性服务

谷歌学术

百度学术

必应学术

相关权益政策

收藏/分享