Tectonic implications of post–30 Ma Pacific and North American relative plate motions

@article{Bohannon1995TectonicIO,
  title={Tectonic implications of post–30 Ma Pacific and North American relative plate motions},
  author={R. G. Bohannon and T. Parsons},
  journal={Geological Society of America Bulletin},
  year={1995},
  volume={107},
  pages={937-959}
}
The Pacific plate moved northwest relative to North America since 42 Ma. The rapid half rate of Pacific-Farallon spreading allowed the ridge to approach the continent at about 29 Ma. Extinct spreading ridges that occur offshore along 65% of the margin (Lonsdale, 1991) document that fragments of the subducted Farallon slab became captured by the Pacific plate and assumed its motion prior to the actual subduction of the spreading ridge. This plate-capture process can be used to explain much of… Expand
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