See below categories of files that can be downloaded as input data for this work. Please email geotim [at] gmail [dot] com with any samples we may utilize:

Stratigraphic charts
Raw data (Excel spreadsheets)

The following compilation adapted from Drever and Johnstone (1957): Crystal figures shows the configurations of crystals growing quickly in a erupted lavas. These are found across the planet and solidified as igneous rocks at punctuated time periods throughout Earth’s history.