2016 | OriginalPaper | Buchkapitel
Reverse Models
verfasst von : Vojtěch Janoušek, Jean-François Moyen, Hervé Martin, Vojtěch Erban, Colin Farrow
Erschienen in: Geochemical Modelling of Igneous Processes – Principles And Recipes in R Language
Verlag: Springer Berlin Heidelberg
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This rather short chapter explains fundamentals of fitting binary mixing hyperbolae to real data arrays (e.g., in
87
Sr/
86
Sr vs.
143
Nd/
144
Nd plots). This is done by the least-square method, and the outputs are asymptotes with curvature. The second part of the text presents reverse solution of the AFC as described by Powell (1984), using the slope of the mixing line in the 1/C vs. I diagram (e.g.,
1
/Sr vs.
87
Sr/
86
Sr plot).