% README for supplementary code to generate Figs 11,12,13 of
% Juliana Okubo, Alan J. Kaufman, Lucas V. Warren, Michael N. Evans,
% Selva Marroquín, Michael A. Varni, Aroldo Misi, Anelize M. Bahniuk and
% Shuhai Xiao, 2022, The sulfur isotopic consequence of seawater sulfate 
% distillation preserved in the Neoproterozoic Sete Lagoas post-glacial
% carbonate, eastern Brazil, J. of Geological Science, in press, 
% doi: 10.1144/jgs2021-091.
%
% If you have already unzipped and found this readme file:
% To recreate Figs 11,12,13 from the paper, start matlab and 
% run the script run_fcas6.m
%
% Tested with MATLAB  '9.9.0.1538559 (R2020b) Update 3' and Windows 10
% Tested with Octave 6.4.0 and Windows 10
% Michael N. Evans, mnevans@umd.edu 11 February 2022
%
% zipfile contains:
% README : this readme file (ascii text)
% run_fcas6.m  : the run script to produce simulations and figures
% params6.m : script called by run_fcas6.m defining parameters
% fcas6.m : function called by run_fcas6.m to perform simulations
% myfunctions/rk4.m : function called by fcas6.m
% fig11.pdf :  figure 11 of Okubo et al 2022
% fig12.pdf :  figure 12 of Okubo et al 2022
% fig13.pdf :  figure 13 of Okubo et al 2022
% 
% To perform the simulations and make the figures, start either MATLAB or
% Octave, and call 
%
% run_fcas6
%
% from the command line.