摘要
在简要介绍了硅质岩基本地质特征的基础上，详细讨论了该套硅质岩的常量元素、微量元素以及氧同位素化学成分及组成．研究表明，该套硅质岩富集了与热水成因有关的Ａｇ、Ａｓ、Ｃｒ、Ｐｂ、Ｚｎ、Ｃｕ、Ｂ、Ｓｂ等微量元素和ＣａＯ、ＦｅＯ、Ｆｅ２Ｏ３等氧化物中常量元素，贫化了ＴｉＯ２、Ａｌ２Ｏ３、ＭｎＯ等氧化物中的常量元素．氧同位素组成及利用氧同位素估算的硅质岩的形成温度。
On the basis of geological occurrence of silicalites,the chemical compositions of oxygen isotopes,trace elements and major elements of silicalite are discussed in detail.It exphains that silicalite possesses rich trace elements:Ag,As,Cr,Pb,Zn,Cu,B,Sb and major elements:CaO,FeO,Fe 2O 3,but lacks major elements:Al 2O 3,TiO 2,MnO Which can be relative to the origin of thermal water deposition.Oxygen isotope constitution and the silicalite formation temperature estimated by oxygen isotope present the features of thermal water deposition origin.
出处
《地球科学（中国地质大学学报）》
CSCD
北大核心
1996年第1期99-102,共4页
Earth Science-Journal of China University of Geosciences
关键词
热水沉积
硅质岩
微量元素
氧同位素
地球化学
thermal water deposition
silicalite
major element
trace element
Oxygen isotope.
