沉积作用 [地质] sedimentation ; Sedimentation Processes ; siltation
旋回沉积作用 cyclical deposition ; cyclothemic sedimentation ; Cyclic Sedimentation
沼泽沉积作用 paludification
原地沉积作用 autochthonous sedimentation
沉积〔作用 deposition
河流沉积作用 river deposition
洪水沉积作用 flood deposition
底栖生物沉积作用 benthic sedimentation
沉积分异作用 sedimentary differentiation
相比之下，由于沉积作用在大陆地区的连续性要小得多，因此根据已知的上下岩层的年龄来估计一个大陆岩层的年龄风险更大。
By contrast, because sedimentation is much less continuous in continental regions, estimating the age of a continental bed from the known ages of beds above and below is more risky.
很明显冰川作用就发生在相对不远的过去，因为漂流物很软，像新鲜的沉积物。
It was apparent that the glaciation occurred in the relatively recent past because the drift was soft, like freshly deposited sediment.
最后一次冰川作用的漂浮物沉积在最近的其中一个地质时期——更新世，这段时期从180万年前持续到1万年前。
The drift of the last glaciation was deposited during one of the most recent epochs of geologic time, the Pleistocene, which lasted from 1.8 million to 10,000 years ago.
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