The code plots a Geological Time Scale with ages, stages, geomagnetic chrons and orbital solutions of eccentticity, obliquity and precession.
To run on jupyter notebook, download GPTS.ypnb and related datafiles( gpts1995-2020.xlsx, laskar2004-100Ma_mean annual) and execute it locally.
To run on google colab execute GPTS_Astro_for_Colab.ypnb The code generates a plot that is saved in a pdf format in your google drive main folder.