Phoenix_Ridge

Antarctic-Phoenix Ridge

Antarctic-Phoenix Ridge

Ancient mid-ocean ridge between the Phoenix and Pacific plates

The Antarctic-Phoenix Ridge, also called the Phoenix Ridge, is an extinct mid-ocean ridge that consisted of three spreading ridge segments between the Antarctic Peninsula and the Scotia Sea. It initiated during the Late Cretaceous-Early Tertiary when the Phoenix Plate had divergent boundaries with the Bellingshausen and Pacific plates. Spreading along the Antarctic-Phoenix Ridge had ceased entirely by 3.3 million years ago when the small remnant of the Phoenix Plate was incorporated into the Antarctic Plate.[1]

The small remaining piece of the ridge can be seen in the bottom right (present day) image.

See also

References

  1. [1]
    Eagles, G. (2003). "Tectonic evolution of the Antarctic-Phoenix plate system since 15 Ma" (PDF). Earth and Planetary Science Letters. 217 (1–2): 97–109. doi:10.1016/s0012-821x(03)00584-3. Retrieved February 25, 2017.

59°37′18″S 59°37′18″W

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