Re: The Spiders of Mars - from water or CO2?
Rob Clark wrote:-
However, the very fact that such dendritic patterns are seen should suggest they are indeed formed by flowing water. Current opinion largely points to the idea that the south polar cap consists largely of water with a CO2 covering.
"Cough" Try "water ice with a CO2 covering". The difference is important.
In some locations the water may be in liquid form because of the overpressure of the CO2 ice.
Bob, pressure of that order does not liquify H2O at temperatures of -130 C. I don't know what you're trying to prove, but you're going about it the wrong way, IMHO...