瑞士卢塞恩湖水下泥流的相和搬运特征——泥流转化为浊流的实例

FACIES AND TRANSPORTING CHARACTERISTICS OF SUBAQUEOUS MUD FLOW IN LUCERNE LAKE,SWITZERLAND——the case of mud flow transformed into turbidity current

本文分析了1795年在卢塞恩湖北岸韦杰斯镇附近发生了一次直接入湖的巨大碎屑流,通过该事件沉积学的研究,揭示了水下泥流不同相带的搬运特征和沉积特点,为泥流转化为浊流的研究提供了实例。

Understanding deeply the interrelationship between different kinds of gravity current deposits is an extremely important subject in the study of lake sedimentology.Recently the transporting process models for turbidity currents with diverse origin have been established through the analysis and anatomies of resedimentation by disaster events.A tremendous debris flow emptying directly into Lucerne Lake occurred at Wegiss Town in 1795.The research of sedimentation caused by this event reveals the characteristics of transport- ation and sedimentation for different facies of subaqueous mud flow,provding a good case for the transforming process from mud flow into turbidity currents.