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StoneGloves wrote: Is chalk porous - it's like blotting paper! But it's not difficult to smear a thin layer of plastic clay over it to make it watertight - very labour intensive though, and it would leave an archaeological trace. When the underlying bedrock chalk is saturated - in late winter, say - then a ditch cut into it will appear to hold water. Soon as the water percolates deeper it will dry out - appearing miraculous. We haven't got the means or expertise to investigate this though. The lost arts of agricultural irrigation!
thank you so much for this information and clarification.........
if chalk is like blotting paper then the water absorbing into it over the hundreds of years should have carried grain residue ( if there was any) deep into the chalk...... by deep soil tests, i mean on the order of severial feet. perhaps tests would have to be run to determine what depth represented the time of the granary at stonehenge......
i am no soil scientist or chemist or archaeologist so someone else will have to devise such a test. i hope my theory brings someone to the task.
thank you again. clyde
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