Proto-phase of Earth
Formed about 4.54 billion years ago by accretion of planetesimals small number in the thousands, a company called proto-Earth. Our plane was accretion of asteroids and their collisions. This has led to the generation of a huge amount of heat. This, combined with an increase in density, leading to the fusion of heavy elements such as iron and nickel, which was included in the composition proto-Earth.
Was in the molten state of the world during this period decreased these heavy items and are concentrated in the center of mass of the aircraft, which constitutes the core of the earth hot metal. This separation of primitive elements of liquid metal, 10 million years after the proto-Earth was formed. As “Iron disaster he created the layered structure of the earth, with a solid metal core, the formation of a liquid metal that surrounds them with a solid crust later. Catastrophe iron was responsible for the creation of the magnetic field Earth fluid flows metal sheath around a solid core generated.
What do we know about the interior of our planet Earth, has acquired over years of intensive research in the geosciences.
During this time, the earth was an atmosphere surrounded mostly by hydrogen and helium. This thin shell, but it was swept away by the solar wind.
If you ask me how much time had created the earth, then I would say, according to a new study will be the estimated age of 4.54 billion years. This age is determined by radiocarbon dating some of the oldest rocks in the crust.
A Moon made a big impact
About 40 million years after the formation of the earth, affecting an object of the gigantic size of the current Mars (called Theia) and warm earth melted, the ejection of a large portion of the melt in the room was committed to create our moon. The giant impact hypothesis for the formation of the moon widely accepted because of the similarity in the composition of the moon and the earth’s crust and the absence of a liquid metal core of the moon.
Earth cooled, forming a crust, atmosphere and oceans
About 150 million years later, the Earth had cooled enough primitive basaltic crust, the creation is not the same as we have today. Yet magma hotter than it is today (about 1600o C. created the first gas atmosphere and moisture to escape from the broken crust and volcanoes. Was also water by million asteroid impacts, ice, they were obtained. Besides soil enriched with compounds such as carbon dioxide, methane, nitrogen and ammonia.
Clouds are formed by additional cooling of the earth caused the first rain and the establishment of the oceans. The ancient basaltic crust has largely been lost in the bombing of asteroids. 500 million years later, founded the first continental crust. These continents floating on a sea of tectonic plates of Earth’s mantle cause. These continental drift over millions of years. This is how our world was created.
Origins of life
Creations of the ocean and the enrichment of atmospheric gases such as oxygen, nitrogen and methane, were the basis for the arrival of the first all carbon-based life form! As the first single-celled life forms in the oceans is developing, is still under investigation. Development of unicellular evolution of human life would be easy to take tons of books in his description! There is also a debate about whether life originated on Earth or (called theory of sperm Pan) by the impact of asteroids have been sown. So I do not venture to explore this issue at the moment. I will discuss in another article possible.
The future of the planet is closely tied to the fate of the Earth and the Sun many mysteries remain, such as the onset of glacial periods, the mechanism behind the creation of the magnetic field of the Earth and much more resolutely. If some young players motivated this article, these mysteries remain to be explored, I would say my work is done.