Q: How small can a 3D geological model be? Does gslib even recognize units, or is the coordinate system external to the software?
A: It does not appear that any coordinate systems are built into gslib, which means units are held externally. “100” could mean 100 km or 100 microns as far as gslib is concerned. http://www.gslib.com/gslib_help/format.html
(QOTD: question of the day)