Abstract Gravity-driven mass transport deposits (MTDs) form by the downslope-directed movement of sediment associated with slope failure. Simple models suggest that extension forms at the upslope (head) area, contraction is focussed in the downslope toe of the slump, while differential shear associated with strike-slip is restricted to the lateral margins of the slump. Although the head and toe are considered to be dominated by layer-parallel shear (LPS), differential layer-normal shear (LNS) may be generated around the lateral margins of slumps and potentially also within MTDs where flow has been separated into different ‘lobes’. Despite this realisation that LNS must form, there has been little work into the geometries and spatial relationships of resulting structures. Using the late Pleistocene Lisan Formation exposed around the Dead Sea Basin as our case study, we examine detailed (

中文翻译：

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区分质量输送沉积物中流叶周围收缩和坍塌的同时期模式

摘要 重力驱动的质量输送沉积物 (MTD) 是由与斜坡破坏相关的沉积物向下斜坡运动形成的。简单的模型表明，伸展在上坡（头部）区域形成，收缩集中在坍塌的下坡趾部，而与走滑相关的差异剪切仅限于坍塌的横向边缘。虽然头部和脚趾被认为是由层平行剪切 (LPS) 支配的，但在坍落度的横向边缘周围可能会产生不同的层法向剪切 (LNS)，也可能在 MTD 内产生，其中流动已被分成不同的“叶” '。尽管认识到 LNS 必须形成，但几乎没有研究结果结构的几何形状和空间关系。