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Old 18-October-2005, 05:42 PM
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Default Evidence for plate tectonics on Mars

New Map Provides More Evidence Mars Once Like Earth

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NASA scientists have discovered additional evidence that Mars once underwent plate tectonics, slow movement of the planet's crust, like the present-day Earth. A new map of Mars' magnetic field made by the Mars Global Surveyor spacecraft reveals a world whose history was shaped by great crustal plates being pulled apart or smashed together.
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Old 18-October-2005, 06:10 PM
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I'm still a little dubious. I think that if there was plate tectonics, it was very limited and not planet wide. I also think that most of the evidence stated in the article can be explained by a Tharsis uplift that did not include subduction and plate movement in the Earth sense.

But it is great that they are gathering more and more information and putting it together.
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Old 20-October-2005, 07:09 PM
RGClark RGClark is online now
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Default Supports the idea on an early ocean on Mars.

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Originally Posted by ToSeek
See for example here:

Plate Tectonics: The Mechanism.
http://www.ucmp.berkeley.edu/geology/tecmech.html

Bob Clark
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