At the bottom of the North Atlantic lays a crack called the North Atlantic Ridge. It is a crack between 2 of the tectonic plates that the Earths crust is made of The north America one and the Eurasian one. Underneath the crack is a hot spot or a Mantle plume, where the magma from the core is forcing itself up through the mantle and up to the surface, ripping apart the tectonic plates and causing them to drift apart from each other.
These eruptions have therefor little by little built up this Basalt rock in the middle of the Atlantic ocean. The oldest rocks in Iceland are about 16 million year old, but compared to the rest of the world its very young. Iceland is like Hawaii, constantly been built up, The youngest rocks in Iceland are from last year! We can then say that Iceland is an old seabed that has lifted up by volcanic activity millions of years ago. Most common rock in Iceland is therefore Basalt.
These 6-8 tectonic plates are drifting into each other all over the world, or rubbing against each other causing big earthquakes like the big one in Japan 11 march 2011. If it wasn’t because of all this you wouldn’t be here today. There wouldn’t be any island here for you to visit, no volcanic activity and I wouldn’t be here trying to explain these forces of nature that are creating and changing the Icelandic landscape every day. We Icelanders have learned to live with this unreliable nature, We try to understand it but believe me, we don’t.