最終更新日：2024/07/30

(geology) The outward movement of the seafloor from central underwater ridges as a result of plate tectonics; the major cause of continental drift.

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seafloor spreading

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seafloor spreading

noun

Seafloor spreading is the process of the ocean floor moving apart from each other.

意味（1）

However, the recognition of sea-floor spreading made sense of continental splitting without having to invoke earth expansion.