辽河双台子河口淤泥质沉积物来源探析  

Analysis of muddy sediment origin in Hekou of Shuangtaizi in Liaohe

作　　者：杨俊鹏[1] 孟凡雪[2] 李亚繁[3] 胡克[1] 

机构地区：[1]中国地质大学海洋学院,北京100083 [2]中国地质大学地球科学学院,武汉710069 [3]辽宁省盘锦市国土资源局,辽宁盘锦124101

出　　处：《世界地质》2011年第1期46-50,84,共6页World Geology

基　　金：辽宁省国土资源厅环境地质保护项目(3L1050714422)

摘　　要：采用化学质量平衡法,分析双台子河口淤泥质沉积物的常量元素特征,并对沉积物来源进行了初步探析。结果表明:常量元素在沿拦海大坝由北至南方向上变化较为复杂,在向海离岸方向上Al2O3、CaO、TFe2O3、MgO等表现为岸边含量较高,向海方向上含量较低,SiO2的沉积分布与其相反。上述5种元素具有很好的相关关系,表明了河口沉积物以陆源沉积为主。河口沉积物主要来源于西拉木伦河上游上侏罗统地层区(Ⅱ区),该区贡献率达76.08%,其次为辽河下游第四系沉积物区(Ⅳ区),贡献率达17.10%。The authors analyzed the features of major elements of muddy sediments in Shuangtaizi estuary using chemical mass balance method,and investigated the sources of sediments.The results showed that variation of major elements from north to south on the sea dam was complicated.The contents of Al2O3,CaO,TFe2O3 and MgO were relatively high on shore and relatively low off shore,while the distribution of SiO2 was in contradiction.The correlativity of these elements indicated that the sources of estuarine sediments are continental.The major source of estuarine sediments was the Upper Jurassic strata zone（Ⅱ） locating in upper Xilamulun Rive with the contribution rate of 76.08% and the minor one was the Quaternary sediments zone（Ⅳ） locating in lower Liao River with the contribution rate of 17.01%.

关 键 词：淤泥质滩涂 常量元素 化学质量平衡法 贡献率 

分 类 号：P618.31[天文地球—矿床学]