A new study has revealed that the earth maintained a deep ocean of magma under its surface at the beginning of its history. This can explain the strange anomalies observed today, in the cloak of our planet.
One magma ocean He graduated at the beginning of the history of the earth. A new study theorizes that the remains of this liquid magma layer near the earth’s core can persist today as Strange anomalies in the cloak.
This is not a new idea. As this writes, this ocean basal It has been the object of a lit debate for years. Some geochemical tests indicate that, in the early hundreds of millions of years of the planet’s existence, a persistent sea of merger on the border between the earth’s core and its intermediate layer, the cloak.
However, the formation models of the planet suggest that when the earth was new and fused, it solidified from the bottom up, making it difficult to understand how a deep magma ocean could exist.
The new study, in NatureHe found that not only could there be an ocean of magma, but his presence was inevitable. Regardless of the exact place where the newborn cast planet began to crystallize in a solid, a basal ocean was formed.
One of the study’s findings is that the traces of this sea of hidden magma can still exist today in the form of large low -speed provinces (LLVPS) or “Bubbles” of the cloak. These are giant regions of the deep cloak where seismic waves travel more slowly than in the rest of the cloak.
Scientists have debated whether these LLVPs are the remains of the ocean crust that have been pushed to the depths of the cloak, which means that they date from a few hundred millions of years, or if they are the remains of the magma ocean Basal da Earth, which makes them 4.4 billion years.
The new study defends the second hypothesis; And the results may have important implications in the way researchers understand the history of the earth.
The beginnings of the earth
As Live Science details in the new study, the researchers built a new model of land formation that considered both geochemical and seismic data – the two main methods of persciting the deep history of the earth.
The team analyzed the point where the cloak would have been sufficiently crystallized to behave like a solid and not as a liquid. It was found that regardless of where solidification began-in the middle of the cloak or even on the border with the core- a basal magma ocean was formed.
The researchers varied the conditions of their model to change the depth of solid formation, but these parameters have not changed anything. I.e, even in the circumstances less conducive to the formation of an ocean of deep magma, it formed.
“The results suggest that the planet’s main structure has graduated very early in its history,” Live Science, the main author of the study and planetary physicist at York University in Toronto (Canada), told Live Science,, the main author of the study and physicist. Charles-Édouard Boukaré.
The dynamics of the earth will have been established very early, with these ancient structures to continue influence the way the planet changed in the future.
“If we have an initial condition of the planet and be able to model the early stages of planetary evolution, we can predict most of its behavior on long time scales,” Boukaré explained.
