About

Background

meltPT is a Python package for whole-rock major-element themormobarometric analyses of basaltic (mafic) rocks. It contains modules for:

• Correcting sample compositions for effects of olivine crystallisation

• Estimating pressures and temperatures at which samples were last in equilibrium with the mantle

• Estimating melt fractions and potential temperatures on an individual basis or for a suite of samples

You can find more background information and some example analyses in our paper in Volcanica here.

Citing meltPT

If you use our code, please cite us!

• M^cNab, F. and Ball, P. W. (2023), meltPT: A Python package for basaltic whole-rock thermobarometric analysis with application to Hawai’i, Volcanica, 6(1), p. 63–76, doi: 10.30909/vol.06.01.6376.

You should also refer to the specific release of the code you used. For example, the most recent meltPT release is archived in our Zenodo repository:

• M^cNab, F. and Ball, P. W. (2023), meltPT, version 1.2.1, Zenodo, doi: 10.5281/zenodo.6948030.

We also urge you to cite the original literature on which our code is based. The sample backtracking method is based on that of Lee et al. (2009, EPSL). For a list of themormobarometric schemes available in meltPT, and links to the original papers, see the Thermobarometers section.

If you use our melt-path fitting routines you should also cite:

• pyMelt: Matthews et al. (2022, Volcanica)

• melting model for our examples: Katz et al. (2003, G-cubed)