渤海海砂资源分布特征及物源分析  

DISTRIBUTION AND PROVENANCE OF MARINE AGGREGATES IN BOHAI SEA SYSTEM

作　　者：王鹏[1,2] 吴建政[1] 胡日军[1] 谭肖杰[1] 陈坚[3] 

机构地区：[1]中国海洋大学海洋地球科学学院,青岛266100 [2]国家海洋环境监测中心,大连116023 [3]国家海洋局第三海洋研究所,厦门361005

出　　处：《海洋地质与第四纪地质》2014年第1期145-152,共8页Marine Geology & Quaternary Geology

基　　金：国家自然科学基金项目(41106039)

摘　　要：海砂是十分重要的海洋资源,基于对渤海海域1 366个表层沉积物样品的粒度分析,确定了渤海海峡北部、辽东浅滩、辽东湾东岸、兴城-绥中近岸、秦皇岛近岸、曹妃甸、莱州浅滩等7个海砂资源区,分布面积约12 800km2。通过对表层沉积物样品的重矿物分析,对比前人研究成果,对各海砂资源区进行了物源分析,渤海海峡北部海砂资源区主要为老铁山水道潮流长期冲刷形成的粗粒沉积物堆积,辽东浅滩海砂资源区物质来源为老铁山水道冲刷物质的再堆积,其他海砂资源区物质主要来源于沿岸河流的输运。Based on the particle size analysis of 1366 surface sediment samples in the Bohai Sea, seven areas of marine aggregates are defined, including the northern part of Bohai Strait, the Liaodong Shoal, the east coast of I.iaodong Bay, the Xingcheng-Suizhong inshore, the Qinhuangdao inshore, Caofeidian and the Laizhou shoal. The total area is about 12800 km2. According to the heavy minerals of surface sediment samples, compared to the results of previous studies, we studied the provenance of each area of marine ag- gregates. It is concluded that the aggregates in the northern part of Bohai Strait is formed due to the long- term erosion along the Laotieshan waterway by tidal current. The marine aggregates of I.iaodong shoal are from the resedimentation of the materials from Laotieshan watercourse erosion. The others are mainly from local rivers.

关 键 词：海砂 分布特征 物源 渤海 

分 类 号：P736.2[天文地球—海洋地质]