* '''Geothermal Gradient''' is called to the variation of temperatura according to depth rocks are.It is read in Celcius or Farenheit grades by the unit of vertical distance.The gradient in our planet is quite variable and it depends on different causes. | * '''Geothermal Gradient''' is called to the variation of temperatura according to depth rocks are.It is read in Celcius or Farenheit grades by the unit of vertical distance.The gradient in our planet is quite variable and it depends on different causes. |