Presently the partition coefficient between melt and olivine (Kd), used during composition backtracking, can either be fixed to constant value or allowed to vary as a function of Fo#, following Tamura et al. (2000). These two options are hard coded, so to do anything different users would need to rewrite the backtracking class. It might be nice to give option to plug in alternative parameterizations of Kd - for example, that of Sun & Dasgupta (2020, https://doi.org/10.1016/j.epsl.2020.116549).
Presently the partition coefficient between melt and olivine (Kd), used during composition backtracking, can either be fixed to constant value or allowed to vary as a function of Fo#, following Tamura et al. (2000). These two options are hard coded, so to do anything different users would need to rewrite the backtracking class. It might be nice to give option to plug in alternative parameterizations of Kd - for example, that of Sun & Dasgupta (2020, https://doi.org/10.1016/j.epsl.2020.116549).