摘要
三个钻孔的岩心表明,南李庄泻湖沉积可分为5层,最大厚度15m左右。根据孢粉、微量元素以及岩相特点可将泻湖的演化分为5个阶段。资料表明,湖水变深时期是气候温湿时期,湖水变浅时期为气候凉干时期,指示泻湖的兴衰明显受气候控制。
The cores of three bore holes demonstrate that the sediment of the Nanlizhuang lagoon may be divided into 5 layers, the most thickness of which is 15 meters or so .On the basis of sporopollen, trace elemtnts as well as lithofacies, the evolution process of lagoon can be divided into five stages. The gained data show that the periods during which the lagoon water became deeper correspond to the periods of warm-moist.The periods during which the lagoon water became shallow correspond to the periods of cold-arid climate.This indicates that the evolution of the lagoon was obviously affected by clamate.
关键词
泻湖
孢粉
微量元素
环境变化
湖泊
Lagoon, Sporopollen, Trace element, Environmental evolution
