Making your research reproducible means that you provide the entire workflow from data, through software and post-processing freely available. Not only can somebody repeat your experiments and verify them, they can build upon them. In lab-based disciplines, there are many further challenges, but in research that is predominantly based on

Zenodo is a repository for immutable versions of software that are provided with a persistent DOI for the purposes of citation and reproducibility.   Underworld can be cited via a zenodo DOI. There is a master DOI for all releases (10.5281/zenodo.1436039) and releases after 2.6.0 are

(they don't make them like they used to ... ) Cratons are anomalously-strong regions of the continents that have largely resisted tectonic forces for billions of years. How such strong zones could be forged in a hot, low-viscosity, low stress,  early-Earth has been a long-standing puzzle for geologists. Adam Beall, Katie Cooper