and a teaser
It's worth you thinking long and hard about this. I worked a lot more on that big and unwieldy paper I sent you a few months ago and changed most of it. I may have virtually proved mathematically that Hellas has to be younger than Argyre, Isidis, and Utopia. It also goes a long way to proving that the White Mars model is substantially correct in many areas, particularly around the dichotomy boundary which you wrote about with Tanaka.
I'm publishing it online not in a flash journal though, it should be up in the next month.