The Construction of the Total Alkali-Silica Chemical Classification of Volcanic Rocks*

作者: M. J. Le Bas , R. W. Le Maitre , A. R. Woolley

DOI: 10.1007/BF01160698

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摘要: This paper describes the reasoning that lies behind construction of field boundaries in Total Alkali-Silica diagram (TAS) for chemical classification volcanic rocks. It shows by utilizing nomenclature common use petrologists combination with a large computer database geochemical analytical information derived from published literature, it was possible to construct rocks only 15 fields, which has straight-line and necessitates definition 11 points diagram. One principal constraints on positioning between various named fields minimize degree overlap adjacent fields.

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