g According to the geothermal gradient, rocks buried 75 km beneath the surface would normally be at what temperature? At 75 km depth, rocks will be heated to about _______ degrees Celsius.
The geothermal gradient is measured with the respect to the changes in the temperature of the plates at the various depths. And away from the plate tectonic boundaries it goes on increasing and is expressed the 30 degrees per celsius and the earth internal heat comes to form the planets heat and planetary acceleration.
