南沙群岛南永3井岩心常量和微量元素特征及其古环境意义  

Charactertstics of the Constant and Trace Elements and Their Paleo-Environmental Significance in the Core of Nanyong-3 Well, Nansha Islands

作　　者：温孝胜[1] 赵焕庭[2] 王丽荣[2] 

机构地区：[1]中国科学技术大学地球与空间科学系,合肥230026 [2]中国科学院南海海洋研究所,广州510301

出　　处：《海洋通报》2001年第4期32-38,共7页Marine Science Bulletin

基　　金：国家"九五"科技攻关南沙群岛综合科学考察项目( 97-926-03-01A )专题成果

摘　　要：分析了南永3井岩心中常量元素和微量元素特征，证实 Mg、K 和 Na 等元素之高含量值与暖期有关，低值均出现在凉期内。在 K 和 Na，Cd 和 Sr，Li 和 Ba 以及 Ni 和 B 之间存在明显的相关性。以井深 469 cm 为界，其界线上下的元素特征有明显不同，意味着约在 698 AD 前后，环境发生明显的变化。The characteristics of constant and trace elements in the core of Nanyong-3 well are analysized in this paper. It is proved that the higher content of Mg, K and Na is associated with the warm period, and that the lower values occur in the cool period. The correlations between K and Na, Cd and Sr, Li and Ba are also obivious. The element features above and below the 469 cm depth of the well are very different, indicating that the environment changed remarkedly in about 698 AD.

关 键 词：常量元素 微量元素 古环境 南沙群岛 镁 钾钠 镍 钡 硼 

分 类 号：P736.22[天文地球—海洋地质]