Iceland is made out of a Mid-Ocean ridge called the Mid-Atlantic Ridge in the North Atlantic Ocean. They form underneath the ocean, deep in the Earth convection currents ring molten material up to the upper mantle. This material rises through cracks between oceanic plates that are moving away from one another.
Early scientific attempts st determining Earth's age gave a number that was around 4.6 billion years old.
<h3>Radiometric dating methods</h3>
The age of rocks can be most determined by radiometric dating.
This process of radiometric dating makes use of two different isotopes of a sample.
It is known that Radioactive isotopes break down within a known amount of time and this enables geologists to determine the age of a sample with the aid of equipment like thermal ionization mass spectrometer.
Learn more about Radiometric dating at
