-Ashley M. Palumbo

"Abundant erosion that cannot be fully attributed to background erosive activity."

This LPI is a bit of an oddity in that the speaker isn't the speaker, they are the slideshow producer.

It's a simple concept. A massive impact has massive effects, right? Well on Mars, we expect that to be doubly true, since even small impacts seem to have had profound effects. 

Argyre Basin is the third largest Noachian impact basin after Helles Basin and Isidis Basin. They both represent the end of the Late Heavy Bombardment and the middle of the Noachian era. That basically means that the dynamo is long gone, the majority of peak-atmosphere is long gone, the big shield-volcanoes are just getting started, and Valles Marineris is an era and a half away from starting. Most likely topical-Mars is very frozen and still, just with a lot more ice than Amazonian Mars.

• Pay attention to the slide at 3:40 and how not-still such an impact potentially can make Mars for a few centuries.
• At 8:00 there is a nice slide comparing a similar crater on Luna, which has essentially no weather, and Argyre which experienced weak weather. Part of the argument in this lecture is that the weather caused by the Argyre impact is what eroded the older craters. 
• At 12:10 the speaker mentions something exciting that Percy can do to test these premises. It will be a few years, but Percy has the chance to sample Noachian Mars, no lander has to date.

Among the great and persistent misconceptions that are ubiquitous in the click-bait media is the premise that Mars has an Earth-like lithosphere. It doesn't. Mars surface as anyone who has seen Percy or Curiosity drill into, is very fragile and porous. Yet the weather is weak, so much so that the soft ground once altered, stays altered. Over the eons, any great event, stays in the record.

This is why all major Mars formations, including riverbeds, eskers, and glaciation, are best explained as episodic. This LPI lecture, performed at the same conference as this one, may help some understand better.