Figure 4.
Brine evolution model for closed basins, featuring the Long-Lyons-Hines (2009) model for acid saline Lake Tyrrell spring zone waters, and based on the Eugster-Hardie-Jones brine evolution concept (Eugster, 1980; Eugster and Hardie, 1978; Eugster and Jones, 1979). In this variation of the model, abundance of HCO3 determines starting path. Several evolution pathways have been documented for specific closed lakes with neutral alkaline conditions, especially those in Africa and the western U.S.; in a complete model, these would appear to the right of the detailed Lake Tyrrell path. The more extreme and variable acid brines in southern Western Australia would appear as several complex evolution pathways to the left of the Lake Tyrrell path.