Iapetus - Black on white or white on black? |
Iapetus - Black on white or white on black? |
Sep 14 2007, 07:40 AM
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#1
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Member Group: Members Posts: 813 Joined: 8-February 04 From: Arabia Terra Member No.: 12 |
Seems to be a lot of dispute on this subject... I think it's ice from the interior, but what does everyone else think?
Edit: This world seems very complex so the question could perhaps be phrased as 'which of these options is most responsible for the Iapetan dichotomy?' |
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Sep 18 2007, 08:24 AM
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#2
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
What can I say.. just look at this d__n stuff... At this latitude, ALMOST none of it is on a horizontal surface, it's almost ALL on slopes, facing noonday sun. Not quite all, but the stuff in the lower left basin rim setment is the totally classic example. I can't avoid the conclusion, as I said above, that some process has caused it to creep against gravity, to accumulate on surfaces perpendicular to the sun's rays at mid-day.
Igor... it's alive..... IT'S ALIVE!!!!!!!! <master.... you didn't take your medicine this morning!> (data taken and sharpend from UGordon's big b&w mosaic) |
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