[ispom]

http://www.universetoday.com/wp-cont...-1212titan.jpg

The mountains probably formed when material welled up from below to fill the gaps opened when tectonic plates pull apart, similar to the way mid-ocean ridges are formed on Earth.

The evidence is mounting that this circular feature is a volcano,” said Dr. Rosaly Lopes, Cassini radar team member at NASA’s Jet Propulsion Laboratory, Pasadena, Calif. “With radar data alone, we identified it as a possible volcano, but the combination of radar and infrared makes it much clearer.”

http://www.universetoday.com/2006/12/12/massive-mountain-range-seen-on-titan/

plate tectonics, cryo- (?) volcanism on Titan….

but the 1.5 km high mountains are from ice…………..