从剖面上部去掉最年轻的层，使下伏的岩层恢复到原始的、未被扰动的状态。
Removal of the youngest layers of rock at the top of the section allows restoration of the underlying layers to their initial, undisturbed configurations.
从剖面上部去掉最年轻的层，使下伏的岩层恢复到原始的、未被扰动的状态。
Removal of the youngest layers of rock at the top of the section allows restoration of the underlying layers to their initial, undisturbed configurations.
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