corresponding part of the Pacific plate indicate a pulse of extremely rapid seafloor spreading
in the middle Miocene, about 11–18 Ma, possibly beginning as early as 25 Ma. The spacing
of anomalies 5A–5D indicates a full spreading rate for the southern Cocos‐Pacific boundary
of 180–210 mm/yr, depending on the choice of time scale. Relative to the maximum 0–3 Ma
spreading rate of 152 mm/yr, this result significantly expands the upper limit of well …