福建宁德三都澳的沉降与冲淤探讨  

On the Sedimentation and Cut-and-fill Conditions of the Sandouao Bay in Ningde City,Fujian Province

作　　者：陈世亮[1] 

机构地区：[1]福建省第四地质大队,福州350011

出　　处：《福建地质》2008年第4期409-413,共5页Geology of Fujian

摘　　要：宁德三都澳位于福建省东部沿海,口小腹大水深,为中国乃至世界罕见天然良港,阐述全新世以来,三都澳的地壳沉降规律、新构造运动特征,分析三都澳在全新世(1万年)以来,以及全新世晚期(三千多年)来,澳内沉降速率,淤积物等情况,认为三都澳成为世界性良港原因,是地壳沉降作用整体大于澳内淤积物。The Sanduao Bay in Ningde City, situated at the eastern coast of Fujian Province, is one of natural best harbors. The paper presents the regular pattern of crustal subsidence and the characteristics of the neotectonic movement in the Sanduao Bay since Holocene and makes an assay of the subsidence rates and accumulated sediment within the Bay since Holocene （ten thousand years B. C. ） and the late stage of Holocene （three thousand years B. C. ）. It is considered that in the Sanduao Bay the crustal subsidence is wholly greater than the accumulated sediment, which is the major factor of taking shape of the worldwide good harbor.

关 键 词：沉降 淤积 冲刷 探讨 宁德三都澳 

分 类 号：P641[天文地球—地质矿产勘探]