Earth’s inner core was formed 1-1.5 billion years ago: Scientists

The outer core of the Earth is a hot liquid that surrounds the solid nucleus of the inner core.

The research leader, Dr. Andy Biggin, opined that the discovery would fundamentally change the comprehension of the Earth’s core and its history. Paleomagnetism pertains to the evaluation of the count of the Earth’s alluring subject in deposit, rubble, or historical material.

“The results suggest that the Earth’s core is cooling down less quickly than previously thought which has implications for the whole of Earth Sciences”, Dr Biggin added.

With the iron at the Earth’s center freezing to form the inner core, it expels buoyant impurities and light into the liquid core on the outer surface.

Finding the exact date when Earth’s inner core was formed could shed light on many other terrestrial phenomena.

New analysis of ancient rock samples suggest Earth’s inner core formed between 1 and 1.5 billion years ago.

In support of their new theory, researchers have compared various samples from igneous rocks and discovered that the first time when the magnetic field of the Earth became really visible was 1-1.5 billion years ago.

New data indicates that the Earth’s inner core was formed between one billion and 1.5 billion years ago. Scientists believe that the magnetic field acted as a protective layer which shielded our green planet’s atmosphere from harmful solar radiation.

The turbulent movement of iron within the liquid outer core is partly generated by extra warmth within the centre of the Earth being transferred upwards and outwards by convection, and partly by the sluggish solidification of the strong internal core on the very coronary heart of the planet. The reason for these motions is due to the core losing heat to the overlying solid mantle that extends up to the crust. Once the inner core begins to freeze, the convection receives a boost in power from the non-metallic elements that remain molten in the outer core.

The process continues today and is thought to be the main source of “fuel” for generating the Earth’s magnetic field.

The Earth’s inner core is the Earth’s innermost part and according to seismological studies, it is primarily a solid ball with a radius of about 1220 kilometers, or 760 miles (about 70% of the Moon‘s radius).

The theoretical model determines that the core is dissipating heat much slower than ever in the previous 4.5 billion years. “However, it is one of the best ways to look for concrete evidence of when the core started to solidify”. “This contrasts sharply with Mars which had a strong magnetic field early in its history which then appears to have died after half a billion years”.