At https://www.livescience.com/planet-earth/geology/fountains-of-diamonds-that-erupt-from-earths-center-are-revealing-the-lost-history-of-supercontinents … diamonds, it is thought, reach the surface of the earth during massive volcanic eruptions – as supercontinents break up. In Late Cretaceous, 86 million years ago on the geochronological column, a huge fissure in what is now South Africa, sparked into life. Magma from hundreds of miles down shot upwards, we are told. It left behind cone shaped, igneous rock filled tubes. In 1869 a discovery by what is described as a shepherd, somebody who had an eye for the unusual, picked up a diamond rock along a river bank. Just sitting there – or poking out of the bank. This led to a boom in diamond mining in the region. The rock became known as the Star of Africa and the Kimberley mines became the epicentre of a diamond rush. Similar formations, known as kimberlites, have since been discovered around the world. They are stil rare but exist in the Ukraine and Siberia, and more famously in western Australia. They are special because the magma comes from such a deep region of the earth. What is interesting is that their occurrence serems to coincide with the break up of supercontinents. Firstly, at 1.2 billion years ago, then at 600 million years ago, and lastly, between 250 and 50 million years ago – representing the breakup of Pangaea. The earlier supercontinents are a result of plate tectonics theory and the need to fill the void of time prior to Pangaea. For what it is worth, the break up of Pangaea involved considerable volcanism and the splitting apart of continental masses. In an expoanding earth model this could only have taken place on a single occasion. One of the disadvantages of that theory. However, the break up of Pangaea included some of the biggest mass extinction events, such as the end of Permian, end of Triassic and the Cretaceous upheavals. One could reason that asteroid strikes occurred on several occasions in earth’s past and each time it involved further breaking up of the continents. That would of course be anathema to mainstream as they visualise several supercontients going back billions of years in time. One might also argue that why get involved in such early periods when we don’t really know what caused the break up of Pangaea. Are they projecting back into the past repeated breakups of a supercontinent only because they know Pangaea broke up – or have they really established what Pangaea really amounted to. Where did all the water come from? They have pushed it back into the remote past.