MacArgon is a computer program that simulates argon retention in minerals and rocks. It allows users to input arbitrary pressure-temperature paths and calculates the diffusion of argon from mineral grains. MacArgon can replicate data obtained from temperature-controlled furnace-step-heating experiments and bulk fusion.
v5.1 [Nov 16, 2020]
Version §5.0 of MacArgon allows modelling and simulation of the effect of microstructural events, particularly those that change the way argon accumulates or is lost from a collection of crystalline diffusion domains. Argon accumulates through radiogenic decay. It can be lost by diffusion, or the result of a (re)growth event in the microstructure. It can also be repartitioned if the grain is deformed or broken. Individual control points along the pressure-temperature-time path may be flagged as associated with microstructural events. Version §5.0 in addition allows sensitivity analysis of individual Monte Carlo simulations that attempt to match the simulated spectrum with selected steps in the reference age spectrum. A "MacArgon document" is used to store an XML rendition of critical variables. Version §5.1.1 ensures the last opened document reappears, and that data is correctly inserted into the various windows.
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