Revision history of "File:NacratonUSGS.jpg"

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  • curprev 15:27, 19 August 2014‎ Molyneux talk contribs‎ 1,225 bytes +1,225‎ The North American continent, USGS, http://geomaps.wr.usgs.gov/parks/pltec/nacraton.html The brown area shows the part of the North American continent that has been stable for over 600 million years. This region is made up of a basement older Precambr...
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