摘要
大量钻孔岩芯，微古资料和Ｃ￣（１４）测年数据说明山东莱州三山岛—刁龙咀地区７．３ｋａＢ，Ｐ．开始海侵。由于ＳＷ向泥沙流提供物源和莱州浅滩的消能作用，于５ｋａＢ．Ｐ．以来，先后形成莱州沙坝和泻湖系列。２ｋａＢ．Ｐ．以米，许多泻湖先后被冲积物掩埋或被封闭成淡水湖。在刁龙咀西北的浅滩区目前正发育最新的沙咀。
Analysis results of drilling cores and micropaleontologic ang ￣(14)C data suggest thatthe area from Sanshan Island to Diaolongzui(Laizhou of Shandong)was occupied bytransgression in 7.3kaB.P.. After 5kaB.P.,Laizhou barrier and lagoon system began tooccur gradually because of the materials supplied by the SW sand flows and consumptionof wave energy in Laizhou shoal.Many lagoons have been infilled by alluvium or en-closed to become freshwater lakes since 2kaB.P.. At present,the latest sand spit is de-veloping on the shoal northwest of Diaolongzui.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1994年第4期43-52,共10页
Marine Geology & Quaternary Geology
基金
国家自然科学基金
关键词
岩芯
沙坝
泻湖
演化
沉积
三山岛
core barrier lagoon evolution Laizhou of Shandong
