Part three地难豪层的量 Mass Wasting Processes BEDROCK Rockfall Rockfall occurs where a cliff of bedrock is exposed to weathering and pieces of the bedrock are pried loose and fall bounce, or roll to rest at the base of the cliff The resulting deposit is 是一叫“m called talus崩塌岩堆( Behre, and ol san cla 1933; Schumm and Chorley, c下xR CONSOLIDATE MATERIALS 1966;Rapp,1976).nan MIxED ROCKS AND SOIL MOSTLY PLASTIC irregularly eroded cliff, talus Rock cones may develop in the guly冲中沟 head areas Fig 6.2).In more extensive RAPID RA种 OTDVEHY x制 ATE RATE OF MOVEMENT cfs, coalescing聚集taus Rapid earthflow cones form a more -Y RAPID Very tapid continuous blanket of debris referred to as scree山麓碎 PID TO VERY AAPT Ai( Jeffreys, 1932; Adrews 1961) Figure 6.1 Classification of landslides(from Varnes, 1958) 环境地质学 Environmental GeologyPart three 地球表层的塑造过程 环境地质学Environmental Geology Mass Wasting Processes Rockfall Rockfall occurs where a cliff of bedrock is exposed to weathering and pieces of the bedrock are pried loose and fall, bounce, or roll to rest at the base of the cliff. The resulting deposit is called talus崩塌岩堆 (Behre, 1933; Schumm and Chorley, 1966; Rapp, 1976). In an irregularly eroded cliff, talus cones may develop in the gully冲沟 head areas (Fig.6.2). In more extensive cliffs, coalescing聚集talus cones form a more continuous blanket of debris referred to as scree 山麓碎 石(Jeffreys, 1932; Adrews, 1961)