Not that good guessing doesn't help--that can lead to a hypothesis.
I saw an early photo of the Xenia Ohio tornado. In the still, it had two suction vortices in a double helic. Since a tornadic storm is an updraft, and a smoker on the sea floor is an updraft...hmmm---Vortex generated abiogenesis?
Chemestry takes you so far forward--biology only so far back--I'd like to think some kind of mechanical forcing could play a part.
Stream beds or channeled scablands) often have vortex ruts in them with a single stone--rather like natures mortar and pestle/centrefuge.