山东杨庄地区寒武系风暴沉积特征及沉积模式

山东杨庄地区寒武系发育大量风暴沉积及相关沉积构造。以沉积学理论为指导，通过详细的野外踏勘，结合室内资料综合分析，识别研究区典型的风暴沉积构造并划分风暴沉积序列，并建立风暴沉积模式。结果表明:杨庄地区发育风暴侵蚀构造、砾屑段、丘状构造及粒序层理4种沉积构造。根据风暴岩垂向组合特征及沉积构造差异，进一步划分出三种风暴沉积序列，分别对应潮坪、台缘滩台地和前缘斜坡。在风暴沉积垂向演化研究的基础上，建立了研究区风暴沉积模式。风暴岩的发现指示寒武纪杨庄地区位于低纬度热带区域，对早古生代华北东部古环境及古地理恢复具有重要意义。

Sedimentary Characteristics and Model of Cambrian Storm Deposits in the Yangzhuang Area,Shandong Province

A great quantity of storm deposits and related sedimentary structures developed in the Cambrian of Yangzhuang area， Shandong province. Under the guidance of sedimentology theory， through detailed field survey and comprehensive analysis of indoor data， the typical storm sedimentary structures in the study area are identified， storm sedimentary sequences are divided， and the storm deposition model is established. The results show that there are four storm sedimentary structures: storm erosion structure， gravel section， mound structure and graded bedding in the Yangzhuang area. According to the vertical features and sedimentary structure differences of tempestites， three storm sedimentary sequences are divided， corresponding to the tidal flat， platform front slope and platform margin beach respectively. Based on the study of vertical evolution of storm deposits， a storm deposit model is established. The discovery of tempestites indicates that the Yangzhuang area is located in a low latitude tropical region during the Cambrian， and it is of great significance to the early Paleozoic paleoenvironment and paleogeography restoration in eastern North China.