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Propagating Rift
A propagating rift is a seafloor feature associated with spreading centers at mid-ocean ridges and back-arc basins. They are more commonly observed on faster rate spreading centers (50 mm/year or more). These features are formed by the lengthening of one spreading segment at the expense of an offset neighboring spreading segment. Hence, these are remnant features produced by migration of the tip of a spreading center. In other words, as the tip of a spreading center migrates or grows, the plate itself grows at the expense of the shrinking plate, transferring lithosphere from the shrinking plate to the growing plate. Terminology Many other terms that have been used interchangeably with "propagating rift", including propagating ridges, ridge relocation, migrating ridges, propagators, rise jumps and ridge jumps. While they all refer to the same features, "ridge jumps" and "rise jumps" are sometimes used to refer to discontinuous or discrete propagations of a spreading center, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propagating Rift
A propagating rift is a seafloor feature associated with spreading centers at mid-ocean ridges and back-arc basins. They are more commonly observed on faster rate spreading centers (50 mm/year or more). These features are formed by the lengthening of one spreading segment at the expense of an offset neighboring spreading segment. Hence, these are remnant features produced by migration of the tip of a spreading center. In other words, as the tip of a spreading center migrates or grows, the plate itself grows at the expense of the shrinking plate, transferring lithosphere from the shrinking plate to the growing plate. Terminology Many other terms that have been used interchangeably with "propagating rift", including propagating ridges, ridge relocation, migrating ridges, propagators, rise jumps and ridge jumps. While they all refer to the same features, "ridge jumps" and "rise jumps" are sometimes used to refer to discontinuous or discrete propagations of a spreading center, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
