Temperature of magmas is difficult to measure (due to the danger involved), but laboratory measurement and limited field observation indicate that the eruption temperature of various magmas is as follows:
* Basaltic magma - 1000 to 1200oC
* Andesitic magma - 800 to 1000oC
* Rhyolitic magma - 650 to 800oC.
/sarc
Ping!
Yeah..you found your environmental scientist.