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3.1.9 Some other cryovolcanic moons

Cryovolcanism is not restricted to Enceladus. Other icy moons also show evidence of cryovolcanism.

Figure 12 Ariel

The surface of Ariel is thought to be the youngest of all of Uranus’ moons, having had the most recent geological activity. While it is unknown if it is currently active, it has been completely resurfaced since the beginning of the Solar System. The deep canyons seen in the image have been filled in and are possibly linear vents. Some similar features occur on Pluto’s largest moon, Charon.

Figure 13 Miranda

Pictured is Inverness Corona. This large corona is interpreted as an enormous cryovolcanic complex. It is one of three cryovolcanic complexes identified on Miranda.

Figure 14 Triton

The smooth surface is thought to be of cryovolcanic origin with mounds and pits formed by ice flows. It has a thin, nitrogen atmosphere that is thought to have been created by the volcanic activity.

Next, try a short quiz on some of what you’ve learnt so far this week.


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