At the time I made this, I had no access to the Big Globe discord server. There is probably a better, updated datapack on there.

This pack adds Tinker's Constructs's geodes, sky islands, and cobalt ore to a Big Globe world.

This was made with Hephaestus in mind, but should theoretically work with any other Tinker's Construct fork, assuming they keep the same tags/structures.

Tinker's Construct