A measure of Geothermal Temperature Gradient along the True Vertical Direction towards Earth's centre:
G_T = \frac{dT}{dz} |
where
| True Vertical Depth (TVD) |
The typical range is /
with world average being
/
.
Geology / Geothermal Temperature Profile
[ Petroleum Geology ][ Geological Model (GM) ]
[ True Vertical Direction ][ Geothermal Temperature Profile @model ]