posted on Jan, 9 2010 @ 09:30 PM
reply to post by MarrsAttax
Yeah, nice work.
The outcropping in the center of the crater is a 'central uplift'. It is caused by a rebound effect , much like what happens when an object falls in
water. In water, the uplift would bounce up and down a few times, causing a ripple effect radiating outwards. This also happens in large impact
events where the central core of the impact remains liquid for a few bounces before freezing itself in one of it's rebounds. That is what causes the
multiple rings around large craters.
Here. One rebound , and on the way up, it freezes itself in time.