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Articles | Volume 6, issue 3
Articles | Volume 6, issue 3
https://doi.org/10.5194/se-6-957-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/se-6-957-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 6, issue 3
Research article
 | 
31 Jul 2015
Research article |  | 31 Jul 2015

Structure of the upper mantle in the north-western and central United States from USArray S-receiver functions

R. Kind, X. Yuan, J. Mechie, and F. Sodoudi

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Short summary
We observed with seismic data the lithosphere–asthenosphere boundary (LAB) in the western United States and the mid-lithospheric discontinuity (MLD) in the central United States. In the northern and southern United States, the western LAB (probably of the Farallon plate) is weakly east dipping. There are indications of a west-dipping MLD in between. We interpret this interfingering structure of the mantle lithosphere as a result of the collision of the Farallon and the Laurentia plates.
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Special issue
The Lithosphere-Asthenosphere Boundary (LAB) Dilemma