Wednesday, February 22, 2006

Manitou p.115

I forgot that they wrote a whole chapter on perched rocks. But I was reading in Manitou about the Lunenburg Table rock and that whole part of the book is worth re-reading. Let me quote from Mavor and Dix:

Robert first noticed the evidence of the table rock's origin. The four sides are not at right angles, and he observed that the line of two adjacent sides of the table were precisely parallel to two sides of a cavity in the ledge next to and below the table rock. This not only showed exactly where the rock had come from, but it had been lifted and placed so that it was oriented in exactly the same direction as it had been before it had been quarried, raised abut six feet and moved over about six feet. Could this be to preserve its natural magnetic orientation? While moving a twelve ton boulder would not be considered particularly difficult as a general proposition, doing so at this particular place would be something of a feat without modern equipment.

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