Overlapping spreading centres: new accretion geometry on the East Pacific Rise

@article{Macdonald1983OverlappingSC,
  title={Overlapping spreading centres: new accretion geometry on the East Pacific Rise},
  author={Ken C. Macdonald and Paul J. Fox},
  journal={Nature},
  year={1983},
  volume={302},
  pages={55-58}
}
In a detailed Seabeam investigation of the East Pacific Rise (EPR) from 8°N to 18°N, a new kind of volcano-tectonic geometry associated with fast-spreading centres has been discovered (Figs 1, 2). At several locations along the rise axis the neovolcanic zone is discontinuous, and is laterally offset a short distance (1–15 km). In contrast to a classic ridge–transform–ridge plate boundary, however, the offset ridge terminations overlap each other by a distance approximately equal to or greater… 
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References

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TLDR
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