(2)坡积裙jalus fan)的特征 ①形态:纵剖面为微凹下的曲线,向下逐渐 变缓: ②结构:组成坡积裙的物质略有分选,并微 具层理结构。一般自坡积裙的顶部到前缘, 颗粒由粗变细
(2)坡积裙(jalus fan)的特征 ①形态:纵剖面为微凹下的曲线,向下逐渐 变缓; ②结构:组成坡积裙的物质略有分选,并微 具层理结构。一般自坡积裙的顶部到前缘, 颗粒由粗变细
被蚀去部分 坡积层 河床 Erosion and accumulation of sheetwash on the slope
Erosion and accumulation of sheetwash on the slope
》努6 Jalus fan(坡积裙)
Jalus fan(坡积裙)
7.2 Landforms Formed by Sheetwash, Flood Current and Accumulation 7.2.2 Landforms Formed by Flood Current and Accumulation 1.洪流的侵蚀作用及侵蚀沟 ()洪流的侵蚀作用—沟状侵蚀 侵蚀沟由小到大逐渐发展,按发育阶段可分为: 细沟、切沟、冲沟、坳沟
7.2 Landforms Formed by Sheetwash , Flood Current and Accumulation 7.2.2 Landforms Formed by Flood Current and Accumulation 1. 洪流的侵蚀作用及侵蚀沟 (1)洪流的侵蚀作用——沟状侵蚀 侵蚀沟由小到大逐渐发展,按发育阶段可分为: 细沟、切沟、冲沟、坳沟
☑1☐233☑4☑s A.细沟 B、C.冲沟 D.坳沟 Development of erosional gully
Development of erosional gully