The mystery about the planet evolution remains a center of attraction for the space lovers. Here we will be discussing the early life of our beloved Blue Planet.
Since its evolution, the Earth resembled a giant ball of water. It was surrounded by an atmosphere which was abundant in the methane contents. This scenario was about the early evolutionary phases of the Earth’s formation. After that, the first landmass starts marking its presence form the ocean depths.
The researchers from the University of Oregon have something to convey in this regard. According to their study, the changes in the temperature and the viscosity of the Earth’s mantle layer gave rise to a broad swath of land. In its initial stage, the mantle layer of the Earth was too soft and hard that it could hardly support the larger mountain ranges and the plateaus. It is something witnessed about 2.4 billion years ago from now that the mantle layer cooled and hardened. It gave rise to the land formation which is now the Kenorland. Kenorland is the first supercontinent.
Ilya Bindeman says, “Crust needs to be thick to stick out of the water. The thickness depends on its amount and also on thermal regulation and the viscosity of the mantle.” Ilya Bindeman is the lead researcher of the study and the geologist.
Kenorland in a nutshell
The findings of the current study coincide with the theory of evolution of the Kenorland. The evolution theory of the Kenorland says that it came into existence about 2.7 billion years ago.
As soon as the new landmass was formed, it started consuming the carbon dioxide from the atmosphere. In collaboration with the high temperatures of the Earth’s surface, the absorbed carbon dioxide gave rise to more complex forms of life. Amongst the more complex types of life are the plants, algae and the fungi. The timings of the current study findings also coincide with the shift from the Archaean Eon to the Proterozoic Eon. The presence of the one-celled creatures dominated the Archean Eon while the presence of the prokaryotes dominated the Proterozoic Eon.
Ilya Binderman says, “What we speculate is that once large continents emerged, the light would be reflected back into space and initiate runaway glaciation.”