Aegir Ridge

The Aegir Ridge is an extinct mid-ocean ridge in the far-northern Atlantic Ocean. It marks the initial line of break-up of the northern Atlantic, along which seafloor spreading was initiated at the beginning of the Eocene epoch. Towards the end of the Eocene, a new spreading ridge, the Kolbeinsey Ridge propagated northwards from Iceland, splitting...
Found on http://en.wikipedia.org/wiki/Aegir_Ridge
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