山东荣成后港泻湖沉积及其速率对比  

THE SEDIMENTATION OF HOUGANGLAGOON,RONGCHENG,SHANDONG AND COMPARISON OF SEDIMEN TATION RATES OF SOME LAGOONS

作　　者：吕海青[1] 刘冬雁[1] 庄振业[1] 张军强[1] 

机构地区：[1]中国海洋大学海洋地球科学学院,青岛266003

出　　处：《海洋湖沼通报》2006年第2期23-30,共8页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金(40276016)资助

摘　　要：根据荣成后港泻湖和镆铘岛周围地区的勘察及S02孔岩芯样品的粒度、^14C、有孔虫等分析资料阐明了该泻湖的形成和演化过程．其形成于冰后期最大海侵之后（约7KaB．P．），泻湖的沉积速率的为0．8mm／a。对比得出，山东半岛的泻湖一般形成于最大海侵之后的两个时期，7KaB．P．左右和5～4KaB．P．；其沉积速率大多在1mm／a左右，最大可这1．56mm／a，最小的为0.55mm／a。泻湖的沉积速率大小主要与入湖物源有关，也与相对海平面升降。沉积物的压缩性相关联。On the basis of the field investigation in Hougang lagnoon and nearby Meye island area, this paper discusses the formation and evolution of Hougang lagoon which formed after the post-glacial maximum transgression, according to the data of core SO2 such as size of grain, ^14C data, forminifera etc. Meanwhile, it follows by eomparion that the lagoons in the Shandong peninsula commonly were formed in two time periods after the maximum transgression, namely about 7KaB. P. and 5～4KaB. P. and their sedimentation rates were about 1mm/a, the maximum being 1.56mm/a, and the minimum 0.55mm/a. The lagoons＂ sedimentation rate is mostly related to the matter sources entering the lagoons. Other factors, such as the relative sea level rise and the compressibility of sedimentation, also affected the sedimentation rate.

关 键 词：后港泻湖 沉积演变 沉积速率 

分 类 号：P512.32[天文地球—地质学]