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law of superposition
释义
WordReference Random House Unabridged Dictionary of American English © 2024
law
′
of superposi
′
tion,
Geology
a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.
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更新时间:2026/9/7 8:59:27