Table 1.

Constants used within the simple stretching model, unless otherwise stated in the text

ParameterMeaningValueUnits
aDepth to initial base of the lithosphere200km
arRadiogenic heat half-space100km
A0Radiogenic heat generation at the surface2.5 × 10−6W m−3
cpHeat capacity400J K−1 kg−1
T1Temperature at the base of the lithosphere1330°C
αThermal expansion coefficeint3.28 × 10−5K−1
κThermal diffusivity10−6m2 s−1
ρ0Reference density for:
Water1000kg m−3
Crust2900kg m−3
Lithospheric mantle3400kg m−3