There has been no icy volcanism on Ganymede, nor continental drift, but it does seem that there have been movements of the surface.

Examination of the surface of Ganymede reveals many kinds of faulting. These provide evidence of the kind of pushing and stretching which the crust of Ganymede has undergone through time.

Examination of the surface of Ganymede shows:

• rifting (like continental rifting of Earth)
• faults which cut the surface into a leaning stack of "dominoes"

This style of icy-crustal-movement proves to be different from either that of Callisto or Europa. (The other major moon of Jupiter, Io has a more Earth-like form of volcanism.) The difference has to do with heating in the interior of Ganymede