OATEK
Senior Member
- Joined
- Apr 12, 2013
- Posts
- 5,548
I remember going on a geography excursion to the tesselated pavement down Corrimal way, and took none of it in back in 1965 apart from the name. I do remember the girl I sat behind in the bus thoughPirate's Bay, where there is a small fleet of tuna boats that are for hire. Fantastic day's fishing; I've done it a few times, mostly when I was an undergraduate.
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And that meant the infamous Lufra Hotel. Its gone a bit up-market today, but many a boozy night spent here before a day's fishing and during geology excursions ... sometimes with unfortunate results.
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Now, nothing's for free, so there will be a test at the end of this post. Opposite the Lufra is the Tessellated Pavement - a wave-cut platform. Now, the sedimentary rocks here are just about horizontal, meaning all the rocks in one horizon are pretty homogeneous.
Here's a general view - the rock is jointed into 'tiles' by two sets of fractures.
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Closer views
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Joints even cut through some drop-stones in the rock:
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This site is a classic Year 1 Geology Excursion field test site. So, let me pass on the favour.
What would cause the jointing like that? Yes, its 'stress', but what might caused the right-angled jointing/fractures?
Look at the pics 2 and 3. Notice how some of the tiles have 'pans' (depressions) and some have 'buns' (rises) in their middles. Why would that occur (depressions Vs rises)?
You don't get to adjourn to the Lufra until you get the correct answers.
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