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back-arc basin |
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back-arc basin [′bak‚ärk ‚bās·ən] (geology) The region (small ocean basin) between an island arc and the continental mainland formed during oceanic plate subduction, containing sediment eroded from both. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Such environments can occur in some extensional environments within the arc, either at shallow levels in the fore-arc, or where a backarc spreading centre propagates into an active arc. |
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