A cusp catastrophic model is founded on the stability of an inclined bedding slope from catastrophic theory, and a formula of the total potential energy and a criterion condition are derived.
本文从突变理论入手，建立了顺层边坡的尖角型突变模型，并推导出了边坡系统的总势能表达式以及这类边坡失稳的临界条件。
The study of the hydrodynamics indicates that the reliable data of the paleocurrent can be collected through features of the size grading, low angle inclined bedding and the backward bedding.
沉积水动力学分析表明可以从槽状交错层理特征中的粒序、低角度斜层和逆向层理提取可靠的古流信息。
These inclined beddings can be divided into 4 bedding assemblages to represent different development stages of tidal sand ridges and to correspond to different postglacial sea-level rise periods.
这些斜层理可以划分为高达4组不同特征的组合，分别代表潮流沙脊发育的不同阶段，对应于冰后期海平面上升的不同时期。
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