The brown and black stripes you see on the icebergs are created by sediment underneath the ice shelf.

冰山上的褐色与黑色条纹是由冰架下的沉积物产生的。

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Almost all the sediments on the continental shelf from the land-based sediment brought by rivers, while the ocean so much as.

大陆架上的沉积物几乎都是由陆地上的江河带来的泥沙，而海洋的成分很少。

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Is also often found on the continental shelf shell layer, and many shells were crushed after the stacked together to form the uneven thickness of the sediment layer.

在大陆架上还能经常发现贝壳层，许多贝壳被压碎后堆积在一起，形成厚度不均的沉积层。

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In the deep water, large swaths of Wilcox sediment slumped over the side of the continental shelf and were swallowed by a layer of salt that dates back to when the American continents pulled away from Europe and Africa.

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Wetland loss has been caused by the Army Corps of Engineers channeling the Mississippi for flood control, with the result that all the sediment in the river is being lost over the continental shelf.

CNN: Your e-mails: 'Clean up our wetlands'