Ocean basin flood basalts (OBFBs)

These provinces form extensive areas of extrusive basalt which are only marginally younger than the ocean floor upon which they rest. They are different from most OPBs in that they do not form well-defined plateaus, but, as their name implies, form in oceanic basins. Coffin and Eldholm (1992) have referred only to three examples (all in reasonably close geographical association with the Ontong-Java OPB) which they consider to be definitely under this heading, and one other (the Aves Ridge, in the Caribbean) which may also be so classified. This form of LIP has attracted the least amount of study and is the least well understood.

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