世界油、气储量增长的一部分正不断地发现于含有浊流沉积物的深水扇中。这些深水扇分布于两个主要部位:一是在距山地、海岸和具有陡峻斜坡的构造活动区较远的部位;一是在离具有平缓但不稳定斜坡的大型三角洲较远的地区(图1)。它们也可以在湖泊中形成,如日内瓦湖。大多数水下扇的物源被认为是坡度变陡处或其附近的沉积物或碎屑。这种沉积物 Part of the increase in oil and gas reserves in the world is continually found in deep-water fans containing turbidity sediments. These deep-water fans are distributed in two main locations: one located further away from mountains, coasts and tectonically active areas with steep slopes; the other is in areas far from large deltas with gentle but unstable slopes (Figure 1 ). They can also form in lakes, such as Lake Geneva. The source of most underwater fans is believed to be deposits or debris at or near steeper grades. This deposit