Hello to those reading this thread.
The dome in the centre of the meteorite impact crater is not a lava dome.
It is a pile of sand.
If you look closely, you can see some dune formations on its surface.
If you also look at a few other pictures of similar sized impact craters, you will see the same piles of sand, being blown into and trapped in the
depression, pileing up and growing as time goes on.
It is not a rebound feature.
Meteoric impacts that are large enough to produce a rebound feature, will have a rugged little mountain in the centre, I have not seen one yet, that
resembles this 'dome'.
Have a look at some of the pics of the Moon or Mars where you can see a crater with a mountain in the middle.
That is a rebound feature.
Impact structures that are smaller are called 'simple' and have no rebound feature.
Those with the rebound feature are termed 'complex.
Also, if you go to the nasa MER site, and look at some of the images of the impact crater that the Opportunity rover took of the large 'Endurance'
crater, which was not far from its landing site, you will see the same process in its early stages from ground level.
Some of these images look like pools of water with rippling waves travelling over them, but they are just 'sand'.
I don't think much of the 'enterprisemissions' blurry, grainy pictures either.
They seem to be the only thing offered as 'evidence' of 'artifacts'.
Terminology is also used with a 'lot' of free license.
Ask more questions from some of the learned folk at the 'meteorite-list' if you want confirmation of what I am saying.
Cheers all,
Kevin.
www.qsl.net...
[edit on 22-6-2006 by VK3UKF]