Norfolk Basin (Oceania)

The Norfolk Basin, which has been subdivided into the North Norfolk Basin and South Norfolk Basin, is an ocean floor sedimentary basin between the Norfolk Ridge to the east and the Three Kings Ridge to the west, on the edge of the submerged continent of Zealandia. The northern boundary is the Cook fracture zone and the southern is the Regina ridge projecting from Northland Peninsula, New Zealand. While it has back-arc basin characteristics its formation and structure are not able to be explained by historic back-arc basin theory.

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