Mysterious and unstable ‘blobs’ with the size of continents below Earth’s surface baffle scientists

For years, scientists have been scratching their heads about two unexplained giants of rock beneath the Earth’s surface.

Many theories have been put forward since their discovery in the 1980s, including claims that they could be very large. Fragment of an alien world.

3D model of the blobs below


3D model of the blobs belowCredit: Mingming Li / ASU

The rocks under the Earth’s crust are about the size of a continent and 100 times taller than Mount Everest.

One is located under Africa, while the other can be found under the Pacific Ocean.

In pursuit of answers, a pair of experts have made some interesting new discoveries about two giant blocks.

As suspected, it turns out, the color spot in Africa is a lot higher.

In fact, it’s twice the height of the height on the opposite side of the world, about 620 miles taller.

And that’s not all.

Importantly, scientists have found that the African rock mass is also less dense and less stable.

It’s not clear why things are the way they are, but it could explain why the continent has significantly more supercano eruptions over hundreds of millions of years than the continent on the other side.

“This instability can have many effects on surface tectonics, and earthquake and supervolcanic eruptions,” said Qian Yuan, from Arizona State University.

These thermochemical materials – formally known as large low shear velocity provinces (LLSVP) – are studied by looking at data from seismic waves and running hundreds of simulations.

While we now know that both have different compositions, we have yet to figure out how this affects the surrounding mantle, found between the planet’s core and the crust.

And most importantly, we can’t figure out the source of these mysterious blobs.

“Our combination of analysis of seismic results and geodynamic modeling provides new insights into the nature of Earth’s largest structures in the deep interior and the interactions of the Earth’s interior. them with a coating around them,” added Yuan.

“This work has far-reaching implications for scientists trying to understand the present-day state and evolution of deep mantle structure, and the nature of mantle convection.”

And so, the investigation continues.

Research published on Natural Geosciences Journal.

Timeline of life on Earth

Here is a brief history of life on our planet

  • 4.6 billion years ago – the origin of the Earth
  • 3.8 billion years ago – the first life appeared on Earth
  • 2.1 billion years ago – life forms made up of many evolved cells
  • 1.5 billion years ago – eukaryotes, which are cells that contain nuclei inside their membranes, appeared
  • 550 million years ago – the first arthropod to evolve
  • 530 million years ago – the first fish appeared
  • 470 million years ago – the first plants on land appeared
  • 380 million years ago – forests appeared on Earth
  • 370 million years ago – the first amphibian from the water to land
  • 320 million years ago – the earliest evolved reptiles
  • 230 million years ago – dinosaur evolution
  • 200 million years ago – mammals appeared
  • 150 million years ago – the earliest bird to evolve
  • 130 million years ago – the first flowering plant
  • 100 million years ago – the earliest bees
  • 55 million years ago – hares and rabbits appeared
  • 30 million years ago – the first cats evolved
  • 20 million years ago – great apes evolved
  • 7 million years ago – the first human ancestors appeared
  • 2 million years ago – Homo erectus appeared
  • 300,000 years ago – Homo sapiens evolved
  • 50,000 years ago – Eurasia and Oceania were colonized
  • 40,000 years ago – Neanderthal extinction

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