Frequency curves are multi-ridge-shaped.Granular parameters are also calculated, which show a heterogenetic accumulation of colluvial wedge sediments with the main component of gravel particles.

• 粒度分布为多峰态，分选差，偏度为极正偏，尖峰度＞1，说明崩积楔是以砾级为主体的非均一性混杂堆积。