Obsidian is quickly cooled lava. When cooled slowly it forms crystals and quartz. Thus obsidian is an amorphous solid like other glasses and it melts over a range of temperatures at roughly the quartz melting point. 1650 C (+/- 75) http://en.wikipedia.org/wiki/Obsidian
The heat increases to the point that rocks can begin to melt in the lower part of the Earth's mantle, known as the asthenosphere. This is where the temperature and pressure conditions allow for rocks to melt and form magma.
In which region of the Earth's interior does the heat increase to the point that rocks can begin to melt?
Rocks can melt at different temperatures depending on their composition. For example, most igneous rocks melt between 600°C and 1,300°C, while some metamorphic rocks can melt at temperatures above 700°C. Additionally, the presence of water and other minerals can influence the melting point of rocks.
asthenosphere
Snow can start to melt at 38 degrees Fahrenheit, as long as the air temperature remains above freezing. When the temperature rises above freezing, the snow will begin to melt.
The heat increases to the point that rocks can begin to melt in the lower part of the Earth's mantle, known as the asthenosphere. This is where the temperature and pressure conditions allow for rocks to melt and form magma.
In which region of the Earth's interior does the heat increase to the point that rocks can begin to melt?
In which region of the Earth's interior does the heat increase to the point that rocks can begin to melt?
In which region of the Earth's interior does the heat increase to the point that rocks can begin to melt?
asthenosphere
0 Celsius
The heat increases to the point that rocks can begin to melt in the region known as the mantle. This layer lies beneath the Earth's crust and is composed of solid rock, but under high temperatures and pressure, some rocks can melt and form magma.
asthenosphere
asthenosphere
asthenosphere
The rocks don't melt because they are under tremendous pressure. High pressure raises the temperature needed to melt something.
Increase