青岛田横岛北岸柱状样沉积物组成与沉积环境分析  

ANALYSIS OF SEDIMENT COMPOSITION AND DEPOSITIONAL ENVIRONMENT FOR THE SEDIMENT CORE FROM THE NORTH SHORE OF TIANHENG ISLAND IN QINGDAO

作　　者：韩宗珠[1] 刘金庆[1] 李安龙[1] 衣伟虹[1] 刘杰[1] 

机构地区：[1]中国海洋大学,山东青岛266100

出　　处：《海洋湖沼通报》2012年第1期92-99,共8页Transactions of Oceanology and Limnology

摘　　要：通过对青岛田横岛北岸THD柱状样的沉积层序、粒度参数和碎屑矿物系统分析,揭示了其形成与滨岸潮滩相沉积环境有关。该柱状样主要由细砂和粉砂质砂组成,可大致分为3层,上下2层主要为细砂和粉砂质砂,中间层是中、细砂。整个柱样表现出分选程度差、风化程度低、不稳定矿物含量高的特点,表明沉积物分选改造不明显,反映出物源为原地或近源沉积特征。The studies on the sedimentary sequences, grain size parameters and detrital min- erals were revealed for the general sediments deposited in a littoral environment. The sedi-ment core consists mainly of fine sand and silty sand compositions which can be divided into three layers： the upper and bottom layers are fine sand and silty sand composition, the meso- sphere is medium sand and fine sand composition. The sediments in the core are in poor sor-ting, in low weathering, and with rich nonresistance minerals. These characteristics show that sediments in the core have not experienced a strong sorting and alteration. It suggests that the sediments are from autochthon or nearly rocks.

关 键 词：田横岛 柱状样 粒度分析 碎屑矿物 沉积环境 

分 类 号：P736[天文地球—海洋地质] P736.21[天文地球—海洋科学]