A Note on the IUGS Reclassification of the High-Mg and Picritic Volcanic Rocks
A Note on the IUGS Reclassification of the High-Mg and Picritic Volcanic Rocks
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高镁火山岩和苦味质火山岩IUGS重新分类的注意事项
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
N. Arndt
中科院分区：
文献类型：
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作者：
A. Kerr;N. Arndt
本简报的目的是对IUGS(Le Bas，2000)对高镁岩石的新分类提出一些评论和意见，特别是它使用了‘Komatiite’和‘Picite’这两个术语，而没有提到这些术语的结构或最初的用法。在本次讨论开始时，我们想正式表明，我们同意重新定义高镁岩石命名的必要性。然而，有一些重要的问题涉及到术语‘komatiite’的使用和术语‘Picite’的定义和使用，这两个问题都没有在Le Bas中讨论
The purpose of this short note is to offer some comments and observations on the new IUGS classification of high-Mg rocks (Le Bas, 2000), particularly its use of the terms ‘komatiite’ and ‘picrite’ with no reference to texture or the original usage of these terms. At the outset of this discussion we would like to place on record that we are in agreement with the need to redefine the nomenclature of high-Mg rocks. There are, however, important issues relating to both the use of the term ‘komatiite’ for all extrusive volcanic rocks with >18 wt % MgO and the definition and use of the term ‘picrite’, neither of which are discussed by Le Bas