Chapter

Geochemical Modelling of Igneous Processes – Principles And Recipes in R Language

Part of the series Springer Geochemistry pp 53-66

Date:

Radiogenic Isotopes

  • Vojtěch JanoušekAffiliated withCzech Geological Survey Email author 
  • , Jean-François MoyenAffiliated withUniversité Jean-Monnet
  • , Hervé MartinAffiliated withUniversité Blaise-Pascal
  • , Vojtěch ErbanAffiliated withCzech Geological Survey
  • , Colin FarrowAffiliated with

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Abstract

The aim of this chapter is to explain basic numerical (R-language) approaches in interpreting radiogenic isotope data in igneous geochemistry, with particular emphasis on Sr–Nd–Hf–Os isotopic systems. The text is concerned with calculation of initial ratios, ages ε and γ values, single- and two-stage model ages and fitting of isochrons. Practical exercises illustrating the principles on real datasets are also included. Lastly, the SrNd plugin is introduced that takes care of such recalculations in the GCDkit system.