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Re: Rock/Stone
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Posted by RayP(MI) on December 28, 2003 at 18:45:24 from (216.46.211.252):
In Reply to: Rock/Stone posted by JCB on December 28, 2003 at 17:07:26:
Well, first of all surface erosion will remove the top, revealing rocks below. This is probably not the whole answer, however - could it be that the rock is less dense than the mud surrounding the stone? This would allow the rocks to "float" upward under certain conditions, of frost, ground water, heaving, temperature changes, etc. Rocks are always down there - Son and I found one this spring that had been giving three generations of farmers trouble on this farm. Found one of my dad's plow points broken off on a ledge toward the top of the rock. It extended down another five feet! We got it out, and it's never going to bother another farmer, unless they persist in plowing swamps!
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