Developer: The Virtual Explorer Pty Ltd

Current Version: 3.0.4

Last Updated: 19 days ago

Download Size: 826 KB - Download


Allows simulation of argon retention in minerals and rocks. Arbitrary pressure-temperature-time paths can be input that a rock must follow, and calculations are performed as to the diffusion of argon from the mineral grains in question. The program allows fact distributions of diffusion domain size and volume that allow replication of data obtained from temperature-controlled furnace-step-heating experiments in an ultra-high-vacuum mass spectrometer designed to measure the concentration of the isotopes of argon. By considering bulk fusion the program also replicates the answers likely to be obtained using laser-spot analysis, or laser-step-heating by pulse-heating the crystals. The program also allows parametric inversion, by considering the variation obtained in families of pressure-temperature-time paths. Manual inversion takes advantage of the highly interactive nature of the graphical user interface.


Release Notes:

Version 3 of MacArgon allows output from the eArgon program to be imported. Use eArgon to infer diffusion parameters from a temperature-controlled furnace-step-heating experiment. Then import those parameters into MacArgon to use them to constrain forward-modelling experiments to ascertain the effect of specific pressure-temperature-time paths on the argon spectrum (or last spot age) retained by the mineral. The effect of domain 'roughness' can be ascertained by adding fractal volume-size distributions using the Diffusion Domain Parameters window. This minor update corrects an error in the way previously defined diffusion parameters are imported.