They are distributed in polar permafrost horizons and submarine sediments.

分布于极地永冻层和海底沉积层中。

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Submarine lava complexes might intrude into the unsolidified sediments, showing pseudo-intrusive contact.

海底熔岩杂岩可以穿切到未因结的沉积物中而呈似侵入接触现象。

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Since Quaternary, abundant sediments from the Pearl River in the north would be transported via shelf to slope and basinfloor, supplying the sufficient sediments for slope-confined submarine canyons.

第四纪以来珠江水系携带的大量沉积物经由陆架进入到陆坡区域，为海底峡谷群的发育和演化提供了充足的沉积物来源。

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