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Earth and Space Sciences · 术语表

什么是 Accretionary prism, tectonic erosion?

又称: accretionary prism · tectonic erosion

Definition 14.6 University Earth and Space Sciences — Year 1 · 第 14 章 — Active Margins

An accretionary prism is a wedge of sediments, with slices of oceanic crust, scraped off the sinking plate and added to the front of the overriding plate at a trench. Tectonic erosion is the removal of rock from the overriding plate by the sinking plate, which carries it down: from the front of the overriding plate, or from the base of its crust.

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