The trouble is, if by sedimentary you mean either soft OR stratified then that would make both erosion and human alteration easier - so it's an argument in favour of both I suppose.
e.g. this -
http://www.wyenot.com/queenstn.htm
In terms of hardness, sarsen could be classed as equivalent to igneous, and such marks in that are often genuinely human.
I'd love to know how many hours of work it would take to produce a "polisher" stone out of sarsen. I've tried to rub sarsen, and based on that it must have been a mind-boggling amount of effort.
Reply | with quote | Posted by nigelswift 30th April 2005ce 08:27 |
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