"Warm" Ice on Enceladus (Model 3)

Original NASA caption:"This graphic represents a possible third model for mechanisms that could generate the water vapor and tiny ice particles detected by Cassini over the Southern Polar terrain on Enceladus.
This model shows sublimation of an "ammonia-water slush" (slush----> fanghiglia costituita da un mix di ammoniaca ed acqua) or "slurry" (slurry---->sin. di slush, ma anche 'combinazione') on the surface".