现代辽河三角洲潮流沉积

朱龙海; 吴建政; 亓发庆

现代辽河三角洲潮流沉积

1 中国海洋大学, 青岛 266003;
2 国家海洋局第一海洋研究所, 青岛 266061

详细信息

作者简介:
朱龙海(1979-),男,博士,从事海洋工程地质、海洋工程环境研究,E-mail:zhulonghai@163.com

中图分类号: P736.21
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出版历程
- 收稿日期: 2006-08-16
- 修回日期: 2006-12-21

EVOLUTION OF TIDAL DEPOSITION SYSTEMS IN LIAOHE RIVER DELTA

1 Ocean University of China, Qingdao 266100, China;
2 First Institute of Oceanography, Qingdao 266061, China

摘要

摘要: 运用钻探和浅地层探测等获得的最新调查资料,对全新世以来辽河三角洲潮流沉积进行了研究。研究区10 m深度内的地层主要包括潮滩相、潮道相和浅海相沉积,其下为古三角洲相。潮滩相沉积物以砂和粉砂为主,分选中等,跳跃和悬浮组分各占50%左右;浅海相和潮道相沉积物主要为软弱的黏土质粉砂和粉砂质黏土,以悬浮组分为主。全新世以来至1896年,研究区为古辽河与古大凌河、绕阳河复合三角洲之间的小海湾。1896年双台子河分洪以后,盖州滩等潮滩形成并快速发育,1969年建闸后,入海径流量不断减小,潮道趋于淤积充填。
- 潮流 /
- 沉积 /
- 辽河三角洲
Abstract: Evolution of tidal deposition system in Liaohe River has been studied using drilling and shallow substrata data since Holocene. Three sedimentary facies have been recognized,including tidal bank facies, abandoned tidal channel facies and shallow sea facies as well as facies of the old tidal delta under them. There was a small bay among the old Liaohe River, the old Dalinghe River and the Raoyanghe River from the beginning of Holocene to 1896. After the Shuangtaizi River became the floodway in 1896, Gaizhou bank formed and developed quickly. The amount of runoff was reducing, causing the tidal channel to be abandoned after the floodgate was built up in 1969.
- tidal current /
- deposition system /
- Liaohe River delta

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参考文献(19)

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