A very large proportion of the world's sedimentary cover is composed of ancient deltaic deposits. 世界上的沉积盖层有很大一部分是由古代三角州沉积所组成的。
Hydrocarbons may be trapped in anticlines draped over deeply-buried horsts in the pre-deltaic basement. 油气可以被捕集在背斜中,这类背斜盖在前三角洲基底中深埋了的土垒上。
The weight of a deltaic pile of sediment may be so great as to depress the earth's crust, thus forming a moat around the depocentre. 三角洲沉积物堆积的重量可以大到使地壳下沉的程度,因此在沉积中心周围形成一条深沟。
Deltaic \Del*ta"ic\, a. Relating to, or like, a delta. ※ ||