What is the pressure range of the lithosphere

In terms of Density, the Lithosphere varies depending on temperature, depth and age. At around 30 miles below the Earth's surface, density measurements can reach 200,000 pounds per square inch. Due to the pressure from the above crust and mantle, lithospheric density increases as both age of the sorrounding rock and depth increase.
In terms of pure temperature, the lithosphere can range from a crustal temperature of 32 degrees Fahrenheit to an upper mantle temperature of 932 degrees F. When combined with the pressure and density found in deeper layers of lithosphere, high temps cause rock to melt and flow beneath the surface, which happens to be a key factor in tectonic and seismic activity around the world.

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