| 同位素和微量元素n元混合方程的推导和地幔混合作用的研究 |
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| 引用本文： | 杨海洋,杨晓勇.同位素和微量元素n元混合方程的推导和地幔混合作用的研究[J].大地构造与成矿学,1997,21(2):145-153. |
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| 作者姓名： | 杨海洋 杨晓勇 |
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| 作者单位： | 中国科技大学地球和空间科学系 |
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| 摘 要： | 推导了任意个源区混合时同位素和微量元素所必须满足的普适方程;以二元混合作用为例详细讨论了在不同的条件下（比值-比值、比值-元素、比值-1／元素、元素-元素）该方程的展开和简化形式。从三元混合方程的展开形式可以看出,“地慢面”的概念是不能成立的,同时大洋玄武岩Nd,Sr和Pb同位素组成数据也并不支持大洋玄武岩为三元混合作用所形成这一假设。
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| 关 键 词： | 混合方程 大洋玄武岩 同位素 微量元素 |
THE DEDUCING OF THE MIXING EQUATION OF ISOTOPES AND TRACE ELEMENT OF N-COMPONENTS AND THE DISCUSSION OF MANTLE MIXING |
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| Abstract: | The general equation of isotopes and trace elements concerning mixing process of arbitrary-components is deduced. The mixing equation of two-components is set as an exampleto discuss how to change it into other forms in order to fit for different conditions (ratio-ratio, ratio-element, ratio-1/element, element-element). From the three-components mixing equation obtained, it can be seen that the concept of "mantle plane" is incorrect, meanwhile,the data of Nd, Sr and Ph isotopes of oceanic basalts show no evidence that the oceanic basalts are formed by the mixing process of three-components. |
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| Keywords: | mixing equation oceanic basalt isotope trace element |
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