From what I could find in a quick search, between 1100 F and 2200 F or 600c and 1200c. It depends on what the rock is made of. Quartz melts at the lowest temp. while basaltic rocks have the highest melting temp.
The rock will melt.
No. If it did then it would melt in your hand. Rock candy is made mostly of sucrose, which does not melt but breaks down at 367 degrees Fahrenheit.
Rock exposed to very high temperature and pressure will soften or melt.
If the temperature is too high, the rock will melt into magma and form igneous rock instead of metamorphic rock. Metamorphic rocks form under high pressure and temperature conditions, but if the temperature becomes too high, the rock will not be able to maintain its solid state and will melt.
they transform into magma
temperature, pressure, and fluid
Melt and recrystallize
Because the Himalayas are a mountain range, made of rock. The temperature is far too low to melt rock.
Metamorphic rock is less likely to melt compared to igneous and sedimentary rocks due to its high temperature and pressure resistance. This resistance is due to the mineral composition and structure developed during the rock's formation.
The two main factors that affect the temperature at which rocks melt are the composition of the rock and the pressure acting on it. Different minerals have different melting points, so the composition of the rock will determine its melting temperature. Additionally, pressure can increase or decrease the melting temperature of rocks, with higher pressure generally increasing melting temperature and lower pressure decreasing it.
A combination of increased temperature, a decrease in confining pressure or addition of volatiles can all act to cause rock to melt.
When fluids such as water combine with rock, the composition of the rock changes, which lowers the melting point of the rock enough to melt it.