Thursday, April 28, 2011
Away with the fairies and an unconformity on Arran!
In 1787 the rocks on this coast gave James Hutton, the geologist, the idea that the Earth isa much older than it had been previously thought. The steeply dipping Cambrian Dalriadan schists in the foreground are overlaid by more recent Carboniferous Old Red Sandstone seen in the cliffs behind the shore. This was the first unconformity that Hutton discovered and based his theories upon.