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DescriptionOceanic spreading.png	Information from english Wikipedia: Still from NASA movie that shows how ocean ridges are formed, lithosphere subducted at trenches; good for understanding plate tectonics. Scientifically not up to date. Found on USGS page [1], original movie at NASA [2]. {{PD-USGov-NASA}}
Date	Originally uploaded by User:Oarih December 28th 2004.
Source	w:Image:Oceanic spreading.png
Author	NASA
Permission (Reusing this file)	PD
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current	04:29, 18 August 2006		309 × 239 (8 KB)	Mats Halldin~commonswiki (talk \| contribs)	{{Information \|Description='''Information from english Wikipedia:''' Still from NASA movie that shows how ocean ridges are formed, lithosphere subducted at trenches; good for understanding plate tectonics. '''Scientifically not up to date.''' Found on

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