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Wile E. Coyote
In: Arizona
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| Mick Harper wrote: | | Blaunau Ffestiniog (not the quarry in question) was the largest in the world and North Walian slate was a mega-industry employing 17,000 men. |
Here at LlannAcme Corp, we rely less on your monpower and more on ingenuity.... so we soak the rocks in cold weather, and let the winter frost do the work, to create perfect roof tiles just like the ancients did.
This allows us to focus on dinner.
More examples eg how to rapidly further coastal erosion (ancient quarrying) would be welcomed.
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Mick Harper
Site Admin
In: London
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How does slate show up in the archaeological record?
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Wile E. Coyote
In: Arizona
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| wrecks of wales wrote: |
Pwll Fanog Wreck, Menai Strait, Anglesey (SH 5342 7070)
A slate carrying cargo vessel from around 14th or 15th century. The slates were from the Llanberis area, split with a gouge and stacked into the wooden vessel which survives beneath its heavy cargo. This gives important information about the North Wales slate industry in late medieval periods. |
It appears that most folk are unable to detect the difference between slate and shale......
http://www.rigaku.com/en/products/xrd/miniflex/app026
For the ancients maybe shale is a poor batch of slate, or t'other way round.
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Ishmael
In: Toronto
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Y'all might want to add Santa Catarina Island in Brazil to your list of causeway'd tidal islands. No. It's not a tidal island now. But it sure looks as though it ought to be. I suspect it was in the past. And if it was, it might just be the largest such island in the world.
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