Recent measurements and photos are already suggesting that a large variety of atoms are ejected by the Comet and surface changes seem to be the origin of local crack shaped colour changes.
The magnetic field of the comet seems to ring or sing 3 times every minute by the internal tectonic shocks.
As a consequence we may assume that all energetic and plasma (new matter) related production processes found around planets and moons could be based on the same process.
Examples are found in the water vapour plumes of geysers observed on Jupiters moon Europa.
WATER FOUND DEEP INSIDE THE EARTH ! THE RESULT OF BURIED COMETARY ACTION? http://www.inquisitr.com/.../hidden-ocean-of-water-found.../
HOWEVER, according to the buried former nuclear Comets it seems to be not a so called dehydration melting process.