Monday, February 11, 2019 – 00:00:00 | 118 | |
In this article: Camagüey, Curiosities, Superocean, Spercontinent, Pangea, Rodinia, Earth, University of Curtin
If the ancient super continents formed and separated into changing cycles over hundreds of millions of years, the Pacific will probably probably expand to become the only super-ocean in the new supercontinent, suggesting researchers at Curtin University (Australia).
The super continents were concentrated and separated through two alternative processes called "introversion" and "extroversion", the researchers explained, published in the journal Precambrian Research.
During the first of these processes, the continent begins to divide into landmasses separated by a new inner sea, where subduction processes are activated so that the crust is submerged in the earth's and the inner sea's mantle returning to the interior of the planet. The continents meet and form a new supercontinent surrounded by the same super sea that was there before.
As for the extroversion process, subduction processes occur in the super ocean surrounding a supercontinent. Its ancient coastlines collide to form its new center, while the inner sea is transformed into a new super sea around this new supercontinent.
According to the version proposed by the Australian specialists, the supercontinent Pangea (which existed 335 million years ago), which grouped the majority of the planet's land masses, was formed when the supercontinent Rodinia (which existed 1,100 million years ago) went backwards from the tectonic forces and burned the super-ocean that surrounded it through the extrusion process.
For its part, Rodinia was formed through a process of immigration following the fragmentation of the former supercontinent Nuna (also known as Columbia), which existed approximately. 1800-1,300 million years ago.
The reunification and separation of the ancient supercontinents occurred through alternating cycles lasting about 600 million years, said the study's main researcher, Zheng-Xiang Li, quoted by Curtin University's official website.
If this alternative pattern holds, according to Li, the next supercontinent will be formed through the influence process. The inner oceans created by the separation of Pangea – the Atlantic Ocean, India and Antarctica – will be closed and the Pacific will expand to become the only super sea in the new supercontinent.
According to the specialist, these two alternative processes not only determine whether the super sea survives, but also about the Pacific ring of Brand will survive.
"If the Brandenes Ring survives with the Superocean, the Earth's mantle structure maintains a pattern similar to the previous supercontinent, otherwise the mantle is completely reorganized," the researcher explains.
Li believes that "such alternative forms of super-continental assembly along with the survival or rejuvenation of the super-ocean and the firing gave them the presence of a soil cycle twice as long as a super-continental cycle of 600 million years ago. of some of the planet's resources. " (Retrieved from https://cdni.rt.com)