# Maintaining tectonic activity without oceans?

It is commonly assumed that terrestrial plate tectonics are a product of our oceans, and tectonic activity would not happen without oceans.

The question is, how can an ocean-less world maintain tectonic activity, to prevent a Venusian runaway scenario?

If this cannot happen, and oceans are required; I prefer not to have H$$_2$$O oceans. Is there an alternative fluid? The planet is intended to be habitable.

• It the ice world acceptable to you? Aug 11, 2021 at 21:58
• @Alexander Not bad Idea, how much its temperature will be, can Ice absorb CO2? and what problems can happen to the atmosphere Aug 12, 2021 at 6:43
• Not sure about tectonic plates, but I'd recommend you check out Titan (moon of Saturn) if you're wanting a non-Goldilocks Zone planet with liquid on the surface. It has lakes of liquid methane, as well as a full methane cycle similar to Earth's water cycle. The main difference? Surface temperatures of 75 Kelvin. Also, because they're cool, check out the cryovolcanoes. :) Aug 12, 2021 at 16:23
• @BenjaminHollon I read about it, although it's interesting to have this, but I need it to have a nice temperature for humans. Aug 12, 2021 at 16:27
• @Khalid I must have misunderstood your statement about the habitable zone then? If it's outside of the habitable zone (where surface temperatures are 0-100 degrees Celsius), it will not be a nice temperature for humans no matter what. Aug 12, 2021 at 16:29