To: SunkenCiv
I enlarged the ‘Topographic divide between the Martian highlands and lowlands’ graphic shown in the article - looks like an ocean bed to me...sediment maybe?
6 posted on
11/05/2007 9:50:41 PM PST by
Fred Nerks
(Fair dinkum!)
To: Fred Nerks
Yea, being a former ocean bed would explain the lack of impact craters.
7 posted on
11/05/2007 9:57:54 PM PST by
derllak
To: Fred Nerks
One large impact event (comprised of many impacting objects or ejecta (or both) may have had something to do with it.
8 posted on
11/05/2007 10:18:03 PM PST by
SunkenCiv
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