珊瑚礁岩心声速垂向跃变及其指相意义  

A study on sound velocity vertical variety in coral reef core and its indicating facies significance

作　　者：李赶先[1] 卢博[1] 

机构地区：[1]中国科学院南海海洋研究所,广东广州510301

出　　处：《台湾海峡》2001年第3期308-313,共6页Journal of Oceanography In Taiwan Strait

基　　金：中国科学院南海海洋研究所边缘海地质与古环境开放实验室课题:珊瑚礁弹性参数随深度变化在古海洋学信息的指示意义批准序号 :6 .

摘　　要：本文在南沙群岛永暑礁南永 1井珊瑚礁岩心声速测量的基础上 ,研究了珊瑚礁岩心声速的垂向跃变特征和相应地层沉积相变及地层侵蚀间断面的关系 ,分析了珊瑚礁岩心相变造成其声速跃变的原因 ,阐明了海平面升降形成珊瑚礁地层侵蚀间断面和产生相变的具体过程 ,指明了珊瑚礁岩心声速垂向跃变与相应地层古气候和海平面变化的关系 .该项研究在岛礁工程建设和礁灰岩区石油勘探声学测井以及西太平洋边缘海古海洋学研究等方面具有重要的实用价值和理论意义 .On the basis of measuring coral reef core sound velocity of Nanyong 1 Well of Yongshu Reef in Nansha Islands, authors studied the relation sound velocity vertical variety features in between coral reef core and corresponding depositional facies variety, analysed the cause of the velocity variety, interpreted concrete process of forming coral reef stratigraphic gap, explained the relation between the velocity vertical variety and the changes of paleoclimate and sea level. The study has important significance in coral reef island engineering constructions and petroleum logging of reef limestone region and paleoceanographic study of marginal sea in the western Pacific Ocean.

关 键 词：珊瑚礁 声速 沉积相 海平面变化 地层沉积相变 古气候 

分 类 号：P737.2[天文地球—海洋地质]