These channels are most common near the apex of the alluvial fan body.

这些河道最常见于近冲积扇体的顶端。

The main sedimentary system includes fluvial, delta, alluvial fan and lake facies.

主要沉积体系为河流、 三角洲、 冲积扇及滨浅湖相。

The sedimentary facies can be classified into alluvial fan, fan delta, lake, stream and swamp.

沉积相可分冲积扇相、扇三角洲相、湖泊相、河流相和沼泽相。

At first light, I started my trek up an alluvial fan into an unnamed canyon in the Cottonwood Mountains.

天刚亮，我就从一片冲积扇区(峡谷山口的扇形沉积物)处开始了旅程，进入了卡顿·伍德山脉中的一个无名峡谷。

Lithofacies vary significantly in alluvial fan, and this results in serious reservoir heterogeneity.

冲积扇体系岩相空间上复杂多变，储层非均质性严重。