The Calc Pinc tab is for calculating the final pressure in the inclusion at any P and T, when you know the entrapment conditions.
Enter the entrapment conditions and the final conditions in the boxes:
Press the Calculate button to get the results. Warning: the results in the information panel are only updated when you press this button!
The information panel shows:
If the program is run in expert mode, you will also see the inclusion pressures calculated with several different models for relaxation from the literature:
0: No relaxation - the pure thermodynamic calculation.
1: Pure Zhang (1998). This is the linear relaxation, with elastic parameters for relaxation always at room conditions.
2: Linear Elastic. This the linear relaxation, but with the elastic parameters for relaxation calculated at the final conditions of P and T.
3: Full Iso P*. This is the non-linear relaxation of Angel et al (2014), calculated with a value of K21 from the elastic parameters at Pthermo, Tend. It is intended to indicate, by comparison with #4, the uncertainties arising from the assumption of constant K21.
4: Full Iso Pend. This is the non-linear relaxation of Angel et al (2014), calculated with a value of K21 from the elastic parameters at Pend, Tend.
5: An iterative solution to the relaxation problem based on the elastic hollow sphere solution (Angel et al., 2017). The final Pinc from this model should be similar to models 3 and 4, and should be the best estimate of the Pinc.