cryovolcanism

cryo- +‎ volcanism

cryovolcanism (uncountable)

1. The activity, and associated phenomena, of a cryovolcano – a volcano that ejects volatile materials rather than magma.
   • 2009, Robert Brown, Jean Pierre Lebreton, Jack Waite, Titan from Cassini-Huygens, Springer Science & Business Media ISBN 9781402092152, page 228

     Sites of cryovolcanisms on the surface, where this ammonia and water mixture reaches the surface, are possible locations for life that lives in liquid water but can tolerate ammonia.

   • 2015 March 12, John Timmer, “Jupiter’s moon Ganymede has a salty subsurface ocean, too”, in Ars Technica‎:

     Possible explanations include floods of liquid water, ice-based volcanic activity (termed cryovolcanism), or even some form of tectonic system.

     […] Voyager also found evidence of cryovolcanism on Neptune's moon Triton.

• volcanism