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Sunken Continents versus Continental Drift

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Author Topic: Sunken Continents versus Continental Drift  (Read 4158 times)
Mario Dantas
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« Reply #30 on: August 03, 2008, 07:15:35 pm »

Dear Tom,

I think quicksands are an exception to the rule...

Quote
Rotational stability is of great importance to floating vessels. Given a small angular displacement, the vessel may return to its original position (stable), move away from its original position (unstable), or remain where it is (neutral).

http://en.wikipedia.org/wiki/Fluid_statics

Quote

The addition of these denser materials raises the average specific gravity for continental material to around 2.7. SiMa (from Silicon/Magnesium - its principal elements) is the material of the Earth's mantle - the 'fluid' in which continents are floating. To all appearances, this material is solid rock, but under the extreme pressure and temperature to which it is subjected, it actually flows like a liquid, albeit very slowly. Its specific gravity of 3.3 is high enough to insure that continents cannot sink.


http://webspinners.com/dlblanc/tectonic/floating.php


with regards,
M
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