Slide 18 of 40
Continental Geotherms
The geotherm in the lithosphere is therefore defined by a two steps function:
for 0<z<=zc
...or if one uses the heat flow entering the base of the crust (
Qm
) instead of the surface heat flow (
Qo
) as alternative boundary condition:
and...
for zc<z<=zl (zl base of the lithosphere)
T = follows the adiabatic gradient (0.3º km
-1
) for z>zl
