Nonlinearity of the post-spinel transition and its expression in slabs and plumes worldwide

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Acknowledgement

J.D. was supported by a James Mills Peirce Fellowship from the Graduate School of Arts and Sciences at Harvard University. R.F. was supported by her faculty start-up fund at Harvard University and by the Henry Luce Foundation. M.B. was supported by a National Science Foundation Graduate Research Fellowship (DGE-1745303). We thank Andrew J. Campbell for loaning us his short symmetric cell for the gas membrane experiments. The experimental part of this work was performed at GeoSoilEnviroCARS (Sector 13) and HPCAT (Sector 16), Advanced Photon Source (APS), Argonne National Laboratory. The Advanced Photon Source is a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02.06CH11357. GeoSoilEnviroCARS is supported by the National Science Foundation (EAR–1634415) and DOE (DE-FG02-94ER14466). HPCAT operations are supported by the National Nuclear Security Administration (DOE-NNSA)’s Office of Experimental Sciences. The data analysis part of this work was inspired by a Harvard class, CS109a: Introduction to Data Science, taught by Pavlos Protopapas, Kevin A. Rader, and Chris Tanner in Fall 2020, and this work benefited from its course materials.

Data Availability

The source data used to reproduce all of the figures in this study can be accessed in the Supplementary Data 1–5 and are available on Zenodo at https://doi.org/10.5281/zenodo.14188625.

Code Availability

The code used to construct the Mg₂SiO₄ phase diagram in this study, including detailed documentation and a benchmark case, can be accessed in the Supplementary Data 6–7, and are available on Zenodo via https://doi.org/10.5281/zenodo.14188625.

Supplemental Material

Supplementary information