Link: USGS Scientific Investigations Map 3237

...This map represents a synthesis of our understanding of Ganymede geology after the conclusion of the Galileo Mission.

We summarize the properties of the imaging dataset used to construct the map, previously published maps of Ganymede, our own mapping rationale, and the geologic history of Ganymede...

Original map: Downloadable PDF [58" x 41", 22.5 MB] available from the webpage linked above.