海洋地质前沿2018，Vol.34Issue(1)：12-19,8.DOI:10.16028/j.1009-2722.2018.01003
海南岛东北部海域海砂资源特征及成因
GEOLOGICAL CHARACTERISTICS AND ORIGIN OF MARINE SANDS IN THE NORTHEAST SEA OFF HAINAN ISLAND
摘要
Abstract
Holocene marine sands or marine aggregates are widely distributed in the water off the northeastern Hainan Island.It may reach hundreds of square kilometers in area,and more than 10 meters in thickness.Based on the survey of water depth,sediment particle size and other geological properties,the regional distribution pattern,scale and size,thickness and sedimentary environments are studied,and the quality and economic significances preliminary evaluated in this paper.High quality marine sannds are mainly distributed in the tidal ridge area of the East mouth of the Qiongzhou Strait,where the deposits are as thick as 20 meters and consist of subrounded grains.The content of sand is higher than 80％.The Sea sands are believed to be the joint product of topography and tidal current or the Holocene tidal depositional system on continental shelf.The nearshore areas are mainly supplied by the sediments from the inner Qiongzhou Strait and the West Guangdong Province,and the material supply from Hainan Island are relatively small.关键词
海南岛/东北部海域/海砂资源/沉积物特征Key words
Hainan Island/northeast water off Hainan/marine sands/sedimentary characteristics分类
海洋科学引用本文复制引用
仝长亮,黎刚,陈飞,张匡华..海南岛东北部海域海砂资源特征及成因[J].海洋地质前沿,2018,34(1):12-19,8.基金项目
海南省国土厅财政调查项目“海南岛北部海砂资源调查评价”(HZ2015-235) （HZ2015-235）
