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

Part of the series Springer Geochemistry pp 69-80


Direct Models

  • 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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In this chapter, we show how the major-element compositions of magmas are controlled by mass balance during their evolution through various processes such as crystallization, melting or mixing, including some variants thereof. Mass balance implies specific numerical and graphical relations (the “lever rule”) that can be used to predict the evolution of melt in any of these scenarios.