Top 5 Facts: Earth’s crust
Five rock-hard facts to build your knowledge of Earth’s crust upon.
11th Century Persian scholar Avicenna proposed that the Earth’s crust’s rock formation occurs through processes that have operated uniformly throughout history.
2. Causeway clash
In the late-18th Century, two groups of scholars fought over how Giant’s Causeway was formed, one believing from volcanic activity, the other sedimentary.
It was geologist James Hutton who first raised the idea of the rock cycle, the process where rocks are eroded, compacted, compressed and melted before cooling into new rocks.
4. Tried and tested
Standard geological tools consist of a rock hammer, chisels, a pocket knife and a storage container. These tools have not really changed in over 400 years.
Volcanoes are one of the predominant creators of new rocks, formed from the cooling and crystallisation of magma. These rocks are igneous varieties.
For more science and technology articles, pick up the latest copy of How It Works from all good retailers or from our website now. If you have a tablet or smartphone, you can also download the digital version onto your iOS or Android device. To make sure you never miss an issue of How It Works magazine, subscribe today!