DOI: 10.1002/2016GL071167
论文题名: Lithospheric velocity model of Texas and implications for the Ouachita orogeny and the opening of the Gulf of Mexico
作者: Yao Y. ; Li A.
刊名: Geophysical Research Letters
ISSN: 0094-8355
EISSN: 1944-8086
出版年: 2016
卷: 43, 期: 23 起始页码: 12046
结束页码: 12053
语种: 英语
英文关键词: Gulf of Mexico
; Ouachita orogeny
; velocity model
Scopus关键词: Shear waves
; Tectonics
; Velocity
; Wave propagation
; Gulf of Mexico
; Low velocities
; Low-velocity anomaly
; Mesozoic rifting
; Ouachita orogeny
; Rayleigh-wave phase velocity
; Shear wave velocity models
; Velocity model
; Shear flow
英文摘要: A 3-D shear wave velocity model of Texas has been developed from Rayleigh wave phase velocities by using ambient noise data recorded at the USArray stations. In the upper crust, the Ouachita front separates high velocity in the Laurentia to its west from low velocity in the east and south Texas basins. The Ouachita belt is characterized as a high-velocity zone with local maximums coinciding with known uplifts, which we interpret as accreted island arcs during the Ouachita orogeny. Our model evidences a strong Ouachita lithosphere that helped to buffer crust thinning from the Mesozoic rifting. A significantly low-velocity anomaly is present in southeast Texas in the lower crust and upper mantle. We associate this anomaly with a past asthenosphere upwelling that likely originated from the edge of the subducted slab during the Ouachita collision and was potentially responsible for the opening of the Gulf of Mexico. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007417055&doi=10.1002%2f2016GL071167&partnerID=40&md5=e1926fdb43ff08e42c5bac089a6086fc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9318
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, United States
Recommended Citation:
Yao Y.,Li A.. Lithospheric velocity model of Texas and implications for the Ouachita orogeny and the opening of the Gulf of Mexico[J]. Geophysical Research Letters,2016-01-01,43(23).