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美国卡林型金矿定年史的启示

DOI: 10.3969/j.issn.1005-2518.2014.01.001, PP. 1-7

Keywords: 卡林型金矿,成矿时代,定年史,启示

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Abstract:

成矿时代研究是矿床学研究中非常重要的一部分,美国内华达州卡林型金矿作为矿床中的典型代表,其成矿时代的探索过程对于相同领域的研究必然有重要的启示作用。本文在回顾前人利用Rb-Sr、K-Ar、Ar-Ar、FT及U-Th/He等方法对内华达州卡林型金矿进行成矿时代研究的基础上,探讨分析了成矿时代研究过程中可能存在的一些问题及不妥之处,认为具有不同封闭温度的同位素计时体系适用于不同成因类型的矿床,成矿时代的研究与成矿温度、封闭温度及冷却速率的研究相结合方能获得更加准确的成矿年龄。

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