A Many ‘Trees’ underground are Moving Magma Above the Earth
Combining data from the giant array with additional sets of seismic data has proven important, as it allows the tem to accurately address an entire mantle, from its largest to its maximum. yield of it. “In terms of seismology, it’s a step forward,” he said Carolina Lithgow-Bertelloni, a geophysicist at the University of California, Los Angeles. “In that sense, I think it’s good.”
The structure of the tree is an intriguing observation, ”Fitton said, and the team’s model of how it rises from the core is a“ smart idea. ”But he warns that their exact model for what is there inside is just one of many possible interpretations of what happened. “I think that’s a really cool idea,” Rychert said. “I don’t know if it’s the right idea, but it’s cool.”
“Seismic tomography is a snapshot now,” Lithgow-Bertelloni said. Taking snapshots of current structures and speculating on how they have evolved over millions of years, and how they will continue to evolve, is fraught with uncertainty, he cautions.
The Disasters to Come
If the team’s theoretical model is correct, it will inspire two long -considered trains. The first, as Goes says, is the Earth’s plumes “not as simple as just making an upwelling in a box of syrup in a laboratory.” Nature is complex, and always in strange ways.
The second is that these giant blocks have played, and will continue to play, an important role in the turbulent history of the planet.
Some scientists suspect that materials from the giant block of Africa spent at least 120 million years tearing the ancient supercontcent of Gondwana into shards. As the trunks of its trunks ascended, they heated it up and weakened it; like moles that make hills, they cause the earth above these plumes to go high, then slip. Australia took the zip of India and Antarctica, Madagascar from Africa, and the Seychelles microcontcent from India – an act of destruction that created the Indian Ocean.
If the plumes or plumes under East Africa continue their attack, they will give up in the future. disintegration of the African continent: specifically, the disintegration of East Africa and the creation of a new microcontcent floating on the side of the world’s smallest ocean.
Yet the impending tectonic rupture seems irrelevant when you consider the danger that could reach the southern tip of the continent. The team estimates that, in tens of millions of years, a block of unproductive proportions will emerge from the central hole and rise to meet what are now the foundations of South Africa. This, Sigloch said, can create catastrophic explosions. Deccan Traps cause what we think of as a lone mantle feather. The upcoming mega-blob, however, has the potential to make volcanism so much more productive and widespread that the Deccan Traps could be a blast in comparison.
Imagining future volcanic apocalypse can be exhilarating. But that’s exactly why painting accurate photos in colors is important: They’re seekers of life and death.
However, for all the turmoil it causes, they are an integral part of the relentless cycle of plate tectonics, an inefficient burial and explosion of carbon and water and, miraculously, resulted in a habitable planet with a breathable air and wide ocean – a paradise created by abyssal behemoths. “Knowing how it can be on a planet billions of years to allow for human existence is important,” Rychert said.
The monsters in the mantle are long overdue and yet to be understood. Until the day comes, scientists will continue to sketch the changing mantle shape, all listening to the many animals moving under their feet.
Original story also printed with permission from Quanta Magazine, an independent editorial publication of Simons Foundation whose mission is to improve public understanding of science by embracing research developments and trends in mathematics and the physical and life sciences.
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