Magma Chamber Simulator
The Magma Chamber Simulator (MCS) is a numerical code that quantifies the effects of concurrent magma recharge, assimilation of partial melts and/or stoped blocks, and fractional crystallization on the compositional evolution of a magma body. The MCS utilizes the energy-constrained approach that integrates a user-defined sequence of open system interactions defined via the MCS IGOR interface with one of four user-chosen MELTS engines (v 1.2.x, v 1.1.x, v 1.0.x or pMELTS) to generate self-consistent phase equilibria (composition and abundances of crystals, melt, and supercritical H2O-CO2 fluid, temperature, pressure and redox conditions) in all subsystems (Magma body, Wallrock and Recharge reservoirs) throughout the complex series of user-defined RnAFC interactions. In addition to intensive and extensive thermodynamic and phase equilibria data, multiple trace element concentrations and isotopic ratios may also be computed based on user-input of partition coefficients and trace element bulk compositions. The trace element/isotope enabled version of MCS will be available to the public December 1 2017.
Details about the theory of MCS are provided in Bohrson et al. 2014, Journal of Petrology (55 : 1685-1717, doi: 10.1093/petrology/egu036). The MCS can be used by the petrologist and geochemist to generate data for comparison with natural systems including whole-rock, melt inclusion and mineral major, minor, trace and isotopic data in order to establish the most significant RAFC processes contributing to the composition of a suite of volcanic or plutonic rocks.