Life & Temperatures on Titan

[DataPacRat]

Anyone have a clue on how deep a borehole could be dug with non-^ TL10?

The current best model of Titan posits a liquid-water ocean about 75 km down, and presumably there'd be at least one exploratory tunnel, if it's feasible. (There don't seem to be any resources worth digging that deep for, that I can find.)

Here on Earth, we made it about 12 km down before the rocks got so hot they became too melty to drill through, but Titan's a lot colder - of course, its surface 'rocks' are actually mostly water-cooled ice.

I thought GURPS: Alpha Centauri's thermal boreholes might have some relevant numbers, but didn't find any; ditto Pulver's article in Pyramid on red mercury.



In case you're curious, here's my current notes on Titan's layers:
- Surface, 150 kPa, 94 K
- 2500-2573 km: Decoupled shell of normal ice (type 1h), somewhere within the bands ~0.15-200 MPa, ~170-270 K
- 2100-2500 km: global subsurface ocean of salty liquid water and ammonia, ?at least 200-500 MPa, ?170 K+
- 1700-2100 km: high-pressure Ice (type VI), ~0.5-2 GPa, ~170-355 K
- 1300-1700km: Hydrous silicate core, ~500-800 K
- 0-1300km: Anhydrous silicate inner core, 900-1275K
- ? 0-500km: iron-rich core