re: Cold-based mountain glaciers on Mars: Western Arsia Mons
The whole area is very interesting.
Olympus Mons has similar features:
http://www.lpi.usra.edu/meetings/sixthmars2003/pdf/3149.pdf
So does Pavonis Mons
http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1153.pdf
and Ascraeus Mons. Lucus Planum west of there has extensive flood water channels.
http://www.planetary.brown.edu/planetary/documents/2682.pdf
and Amazonis Planitia may have been resurfaced by water, some say it could ahve been an ocean bottom. Overall there is an enormous amount of water signs just in this small area. The volcanic activity here probably melted the ice and created the fluvial channels. The glaciers probably came later as they cooled.