Upper mantle S-wave velocity structure in South America from Rayleigh-wave tomography and definition of cratonic units

2007 ◽  
Author(s):  
Marcelo Assumpção ◽  
Mei Feng ◽  
Suzan van der Lee ◽  
Simon Lloyd
Keyword(s):  
South America ◽  
Rayleigh Wave ◽  
Wave Velocity ◽  
Upper Mantle ◽  
Velocity Structure ◽  
S Wave ◽  
Wave Tomography ◽  
Definition Of ◽  
Rayleigh Wave Tomography

scholarly journals S wave velocity structure of the Arabian Shield upper mantle from Rayleigh wave tomography

2008 ◽  
Vol 9 (7) ◽  
pp. n/a-n/a ◽  
Author(s):  
Yongcheol Park ◽  
Andrew A. Nyblade ◽  
Arthur J. Rodgers ◽  
Abdullah Al-Amri
Keyword(s):  
Rayleigh Wave ◽  
Wave Velocity ◽  
Upper Mantle ◽  
Velocity Structure ◽  
Arabian Shield ◽  
S Wave ◽  
Wave Tomography ◽  
Rayleigh Wave Tomography

An upper-mantle S-wave velocity model for East Asia from Rayleigh wave tomography

2013 ◽  
Vol 377-378 ◽  
pp. 367-377 ◽  
Author(s):  
Yonghua Li ◽  
Qingju Wu ◽  
Jiatie Pan ◽  
Fengxue Zhang ◽  
Daxin Yu
Keyword(s):  
Rayleigh Wave ◽  
East Asia ◽  
Wave Velocity ◽  
Upper Mantle ◽  
Velocity Model ◽  
S Wave ◽  
Wave Tomography ◽  
Rayleigh Wave Tomography

Lithospheric structure of Hubei Province, central China, from Rayleigh wave tomography: insight into the spatial contact relationship between the Yangtze Plate and the eastern Qinling-Dabie orogenic belt

2020 ◽  
Vol 221 (3) ◽  
pp. 1669-1683
Author(s):  
Tengfei Wu ◽  
Shuangxi Zhang ◽  
Zijun Cao ◽  
Mengkui Li ◽  
Yujin Hua ◽  
...  
Keyword(s):  
Rayleigh Wave ◽  
Wave Velocity ◽  
Hubei Province ◽  
Orogenic Belt ◽  
Central China ◽  
S Wave ◽  
Dabie Orogenic Belt ◽  
Wave Tomography ◽  
Yangtze Plate ◽  
Rayleigh Wave Tomography

SUMMARY Knowledge about the spatial contact relationship between the Yangtze Plate and the eastern Qinling-Dabie orogenic belt can not only provide a scientific basis for the exploration of mineral resources, disaster prevention and earthquake prediction in the region, but also play an important role in reconstructing the geological process of the central orogenic belt. Hence, high-resolution lithospheric velocity model is essential to address these geological problems. In this study, using waveform data from 48 stations in Hubei Province and adjacent regions, central China, we invert for a 3-D S-wave velocity structure model of the crust and upper mantle from Rayleigh wave tomography. Our model reveals the complex subduction pattern of the Yangtze Plate to the north and the thrust-nappe tectonics of the Qinling-Dabie orogenic belt along the Mianlue suture with different scales and different deformation strengths. In addition, in the central part of Hubei Province, the local Yangtze slab has been broken into several pieces, among which the upwelling low-velocity anomalies appear. Moreover, the southern margin of the Dabie orogenic belt has undergone thrusting-nappe movement, and a series of associated structures are formed in the northern margin of the middle Yangtze platform. The contact zone between the two blocks in this area is composed of a series of thrust faults with dextrorotation slip component. Finally, based on the 3-D S-wave velocity image of Hubei Province and its vertical cross-section profiles along three different directions, three dynamic models are proposed to explain the spatial contact relationship between the Yangtze Plate and the eastern Qinling-Dabie orogenic belt in different regions.

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