The view from my "office"

The DJ onboard was the ship member who was there to assist us. I did suggest to him that we should develop whiplash and PTSD.
Turns out ours wasn’t the worst to happen to an excursion yesterday. Another of the buses ran over a young fellow on a bike who had to be transported to hospital.

As for us there is no need for an SS response as another bus was called and we continued the tour. However at dinner there was a lot of attention paid to us by the staff.
 
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Interesting when I went there I was reminded of Giants Causeway?
@RooFlyer - am I geologically challenged?

You earn 2 credits to your Geology Masters ⭐ 🐘. (that's an elephant stamp, if you are old enough to remember those). Those bored silly with a geology lesson turn away now.

Both the Giant's Causeway (extrusive basalt) and the pillars on the Tasman Peninsula and the Organ Pipes on Mt Wellington (intrusive dolerite) are made from igneous mafic rock - that is, once molten rock (magma) with a relatively low amount of silica.

This web site explains what happens when molten rock of this composition cools (my additions in << >>):

Imagine a huge flow <<or intrusion>> of hot, liquid magma that is settling <<cooling>>. The outer layer is starting to cool and darken in color from orange to black. As it cools, it needs to shrink a bit, as hot materials usually take up more space than cooler ones. Because of this shrinking, the surface of the lava << inside of the lava flow or intrusion>> starts to crack. But this cracking isn’t always random.

In this case, the lava <<intrusive>> starts to crack into regular shapes. Those shapes are forming because of how the lava cools. It starts at different spots called “centers.” If those centers are evenly spaced, the forces that pull inward toward the centers end up creating different chunks of cooling lava that are hexagonal (6-sided), or close to it. The more uniform the material of the lava is (or basically how smooth and well mixed it is), the more evenly those centers pull. That means it is more likely it will cool into hexagonal chunks.



Hexagonal shapes are also 'low energy' and so are favoured as the final cooling product. If the magma had high silica (like a granite) then the strong silica would help bind the rock tightly together and you tend to get big cracks with cooling rather than regular cracks/columns. The ones @kermatu photographed have obviously been weathered a lot after they have been uncovered after forming deep in the crust,so are no longer nice regular hexagonals on the surface.

1698559484728.png

There endeth the lesson.
 
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