parallel bedding造句

The field observation of the sediments of storm surge produced by no . 11 typhoon in 1997 shows that sedimentation rate of storm surge sediments are greater than that of normal astronomical tide sediments , and the grain size shows relative coarse with poor sorting . vertical sequences of the storm sediment show parallel bedding and overlapped by hummock bedding . these characteristics provide good basis for building the index of storm surge deposit
通过对梁垛河闸9711号台风的现场观测并结合目前已有的风暴潮沉积的研究，分析了风暴潮沉积在构造和结构上的特点，从而建立了正常潮滩沉积中风暴潮沉积的识别标志，同时在野外观测中还发现即使在风暴潮期间，高潮滩上部仍存在只有淤积没有侵蚀的地带。
It's difficult to find parallel bedding in a sentence. 用parallel bedding造句挺难的