“back-arc basin”的概念、定义、翻译、参考文献-科学参考

back-arc basin

Geology and Earth Sciences

The zone of thickened sedimentation and extensional tectonics which lies behind an island arc. Sedimentation in back-arc basins can be very varied, ranging from pelagic through turbidites to alluvial fans, although volcaniclastics (see clast) are common. Various convective systems have been postulated to explain extension, which is oriented parallel to the compression in a destructive margin. Back-arc basins have been classified into retro-arc basins and inter-arc basins. Examples include the Japan Sea (between Japan and Korea) and the basins west of the Marianas Trench.

Geography

A zone of tectonic enlargement, and substantial, and strongly asymmetric, sedimentation. A back-arc basin forms when an island arc is split along the line of its magmatic axis, forming a remnant arc, which then glides away. Well-developed back-arc basins widen by back-arc spreading, which is thought to resemble normal oceanic crust formation, but in conjunction with a subducting plate. See Ohara (2006) Island Arc 15, 1 for a general view of the mantle process beneath a back-arc basin spreading ridge.

单词	back-arc basin
释义	back-arc basin Geology and Earth Sciences The zone of thickened sedimentation and extensional tectonics which lies behind an island arc. Sedimentation in back-arc basins can be very varied, ranging from pelagic through turbidites to alluvial fans, although volcaniclastics (see clast) are common. Various convective systems have been postulated to explain extension, which is oriented parallel to the compression in a destructive margin. Back-arc basins have been classified into retro-arc basins and inter-arc basins. Examples include the Japan Sea (between Japan and Korea) and the basins west of the Marianas Trench. Geography A zone of tectonic enlargement, and substantial, and strongly asymmetric, sedimentation. A back-arc basin forms when an island arc is split along the line of its magmatic axis, forming a remnant arc, which then glides away. Well-developed back-arc basins widen by back-arc spreading, which is thought to resemble normal oceanic crust formation, but in conjunction with a subducting plate. See Ohara (2006) Island Arc 15, 1 for a general view of the mantle process beneath a back-arc basin spreading ridge.
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