| 海绿石 K-Ar、40Ar/39Ar 年代学研究 |
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| 引用本文：李明荣,王松山,裘冀.1994.海绿石 K-Ar、40Ar/39Ar 年代学研究[J].地球学报,15(1,2):218-225. |
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| 中文摘要:海绿石是与沉积岩同时形成的高钾层状硅酸盐自生矿物，其 K-Ar、40Ar/39Ar 年龄存在失真现象。笔者认为，引起年龄失真的主要原因是由于该矿物结构中含有可膨胀层。通过测量可膨胀层含量及中子活化过程中39Ar的丢失率，使可对海绿石常规 K-Ar、40Ar/39Ar 年龄进行校正，得到其年龄校正公式。 |
| 中文关键词:海绿石 可膨胀层 K-Ar法 40Ar/39Ar 校正公式 |
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| The corrections for the conventional K-Ar and 40Ar/39Ar dating of the glauconite |
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| Abstract:Glauconite is a kind of K-rich authigenic phyllo silica minerals.Its conventional K-Ar and 40Ar/39Ar data are usually untruthful.These discrepancies are attribute to ,in this paper,the expandable layers in the glauconite,which have no ability of retaining Ar.A method is describled for making quantitative corrections thrugh measuring the expandable layer's proportion and the lost rate of 39Ar.The corrected dating formulas which have been verified reliable are also deduced. |
| keywords:glauconite expandable layer K-Ar method 40Ar/39Ar method corrected formula |
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