| 中国东南陆缘区中生代膨润土矿床同位素地球化学研究 |
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| 引用本文： | 徐步台,黄建国.中国东南陆缘区中生代膨润土矿床同位素地球化学研究[J].地球学报,1997,18(3):275-281. |
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| 作者姓名： | 徐步台 黄建国 |
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| 作者单位： | 浙江省地质矿产研究所;浙江省地质矿产研究所 |
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| 摘 要： | 本文列述了８个膨润土矿床的２３个不同属性蒙脱石的氢、氧和硅同位素分析结果。其中，钠基蒙脱石δＤ值为－７１‰～－８０‰和δ１８Ｏ值为１０．９‰～１４．６‰；钙基或铝（氢）基蒙脱石δＤ值为－５０‰～－７０‰和δ１８Ｏ值为１５．１‰～１８．１‰；它们的δ３０Ｓｉ值－０．３‰～＋０．３‰。通过这些同位素示踪判别并结合矿床地质特征，提出了该区中生代陆相膨润土属低温热液蚀变成因及其在现代（近代）环境水的再作用下天然改型过程的新的同位素证据。
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| 关 键 词： | 膨润土矿床 蒙脱石 同位素地球化学 中国东南陆缘区 |
Isotope Geochemistry of Mesozoic Bentonite Deposits in Continental Margin of Southeast China |
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| XU Bu-tai and HUANG Jian-guo.Isotope Geochemistry of Mesozoic Bentonite Deposits in Continental Margin of Southeast China[J].Acta Geoscientia Sinica,1997,18(3):275-281. |
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| Authors: | XU Bu-tai and HUANG Jian-guo |
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| Institution: | Zhejiang Institute of Geology and Mineral Resources, CAGS;Zhejiang Institute of Geology and Mineral Resources, CAGS |
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| Abstract: | From the date of evolutional history of the solt basin,chemical composition; hydrogen,oxygen,sulfur and boron isotopes compositions,it can be concluded that this brine is related to mixecl type,of marine_continental phases. Envichment in same elements is resulted by mixing of introduced brines and formation water and dissolution of solt basin at evaporation conditions during the late period of brine_solt forming procees. |
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| Keywords: | bentonite deposit montmorillonite isotope geochemistry continental margin of southeast China |
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