Q#1: What the stable mineral assemblage depend on?

A#1: It depend on temperature, pressure and bulk composition.

Q#2: What is the main serpentine mineral in ultramafic rocks metamorphosed under moderate temperature, and when it stable?

A#2: Antigorite is the main serpentine mineral in ultramafic rocks metamorphosed under moderate temperature, and it stable to temperatures of 620-720¢ªC at depths between 30 and 150 km.

Q#3: What is the temperatures of Moho beneath the arc and backarc of mantle?

A#3: Moho temperatures beneath the arc and backarc of mantle are significantly higher, above 800¢ªC.