New Medusae Fossae formation hypothesis, Even bigger culprit volcano Options

[Antdoghalo]

https://www.lpi.usra.edu/planetary_news/202...n-an-early-sea/
Interesting concept in this being giant deposits of pumice. The currents of a possible ancient Mars ocean would favor any floating debris to be carried to the southwest of the volcano.
If true, apparently Olympus Mons has its guts all over the planet, thought a relatively small feat to Tooting crater supposedly throwing them all over neighboring planets.

[ngunn]

There's a lot to like in this idea, but I wonder how the dates of the successive processes work out. Is Olympus Mons old enough (or the ocean recent enough)? I expect this is covered in the full paper. Perhaps someone with access can sketch the proposed chronology for us.