相比于大陆冰川沉积物，海洋沉积物提供了更完整的更新世时期的地质记录。

Ocean sediments presented a much more complete geologic record of the Pleistocene than continental glacial deposits did.

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19世纪晚期，在地质学家对这些冰川沉积进行定位的时候，他们意识到有好几个漂流层，位置较低的对应的是更早的冰川期。

As geologists mapped glacial deposits in the late nineteenth century, they became aware that there were several layers of drift, the lower ones corresponding to earlier ice ages.

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这个滑坡沉积物大可以排除远离上游的沉积物是冰川沉积的想法。

This landslide deposit pretty much rules out the idea that the deposits farther upstream are glacial outwash.

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