On Tue, 20 Dec 2005 10:33:20 -0500, Davoud wrote:

The weathering of craters on Earth is quite like the weathering of
craters on other bodies, no?

True, there is weathering on all bodies. I just meant that weathering is
so rapid on the Earth that we have no pristine craters, and the vast
majority of past impacts are now invisible. Most other Solar System
bodies (including Mars) exhibit such slow weathering that the original
form of most craters remains very clear. Those bodies are much better
suited for studying the statistics of crater morphology.

_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com