Finite-frequency P-wave tomography of the Western Canada Sedimentary Basin: Implications for the lithospheric evolution in Western Laurentia
作者： Yunfeng Chen , Yu Jeffrey Gu , Shu-Huei Hung
DOI: 10.1016/J.TECTO.2017.01.006
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摘要: Abstract The lithosphere beneath the Western Canada Sedimentary Basin has potentially undergone Precambrian subduction and collisional orogenesis, resulting in a complex network of crustal domains. To improve understanding its evolutionary history, we combine data from USArray three regional networks to invert for P-wave velocities upper mantle using finite-frequency tomography. Our model reveals distinct, vertically continuous high (> 1%) velocity perturbations at depths above 200 km Buffalo Head Terrane, Hearne craton Medicine Hat Block, which sharply contrasts with those Canadian Rockies (
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