Geology & Earth Science
Geothermal Gradient
T = T₀ + G·z (G ≈ 25 °C/km)
Descend into the crust and the rock warms by roughly 25 °C for every kilometre, the steady heat leaking out of the Earth's interior — the gradient that bakes deep mines, drives geothermal power and eventually melts rock into magma.
Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own
Gif encoder (no GPU, no ffmpeg, no external packages).