Spin Resonance in Single-Layer Cuprate
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چکیده
The relative motions of tectonic plates are well established, but the motion of the underlying mantle is poorly known. Silver and Holt (p. 1054) determined the motion of the mantle beneath western North America by combining observations of surface deformation with uppermantle seismic-velocity anisotropy. The upper mantle is flowing to the east, opposite the westward motion of the North American plate. Thus, the upper mantle is decoupled from the plate and its flow is primarily related to the subduction of the Farallon plate.
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