& # 39; The Great Dying & # 39; revealed – how a huge volcanic eruption destroyed 90% of the earth's species



SCIENTISTS have found the cause of the greatest extinction event the earth has ever seen – destroying nearly all life on Earth around 252 million years ago.

The fatalistic event has the horrible name & # 39; The Great Dying & # 39; amassed after 90 percent of the marine species and 70 percent of the lands leveled, with land life up to 10 million years to recover in some regions.

    The Permian extinction took place 250 million years ago because of ruthless volcanic eruptions, scientists claim
The Permian extinction took place 250 million years ago because of ruthless volcanic eruptions, scientists claim

In a new document, a team of geo-scientists claims that an almost million-year volcanic eruption in what is now Siberia is behind these near-apocalypse.

This volcanic activity was so powerful that it created a huge area of ​​volcanic rock, known as the Siberian traps or flood basins, from the 1.5 million cubic kilometers of lava that had settled on the ground.

It was previously thought that the so-called Permian extinction was caused by the thick smog of eruptions that surrounded our planet, preventing the sun's rays from reaching the earth's surface.

But this new study reveals that the chemicals released by the volcanic explosions were so toxic that they depleted the earth from its ozone layer – exposing life to the lethal UV rays of our solar neighbor.

A timeline of life on earth

The history of the planet in years …

  • 4.6 billion years ago – the origin of the earth
  • 3.8 billion years ago – the first life on earth appears
  • 2.1 billion years ago – life forms consisting of multiple cells evolve
  • 1.5 billion years ago – eukaryotes arise, cells that contain a nucleus in their membranes
  • 550 million years ago – the first arthropods evolve
  • 530 million years ago – the first fish appear
  • 470 million years ago – first land plants appear
  • 380 million years ago – forests emerge on earth
  • 370 million years ago – first amphibians come out of the water on land
  • 320 million years ago – the earliest reptiles evolve
  • 230 million years ago – dinosaurs evolve
  • 200 million years ago – mammals appear
  • 150 million years ago – the earliest birds evolve
  • 130 million years ago – first flowering plants
  • 100 million years ago – earliest bees
  • 55 million years ago – hares and rabbits appear
  • 30 million years ago – the first cats evolve
  • 20 million years ago – large monkeys develop
  • 7 million years ago the first human ancestors appeared
  • 2 million years ago – Homo erectus appears
  • 300,000 years ago – Homo sapiens evolves
  • 50,000 years ago – Eurasia and Oceania colonized
  • 40,000 years ago – Neandethal extinction

The result was a peak in the death toll compared to other major extinction events, such as the event in which the dinosaurs were killed.

An international team of researchers analyzed Siberian rock from between the earth's crust and the mantle that had reached the surface of the eruptions to determine the cause.

They found that it contained an extremely high concentration of deadly chemicals (so-called halogens such as bromine, iodine and chlorine).

    This event, popularly known as The Great Dying, nearly destroyed all life on our planet

Julio Lacerda

This event, popularly known as The Great Dying, nearly destroyed all life on our planet

These toxins at the time wasted the ozone layer, which ultimately led to the death of the animal and plant life.

"We concluded that the large reservoir of halogens that was stored in the Siberian lithosphere during the volcanic explosion was sent into the atmosphere of the earth, effectively destroying the ozone layer at that time and contributing to the mass extinction," lead author Michael Broadley.

Life on earth, however, looked radically different in the time of the Great Death.

Large herbivores, which were two to three meters long, roamed the land in what is now North America and Europe.

While bony fish with fan-shaped fins and thick scales lurked in the seas along with octopus-like marine silos.

All life on earth comes from the ten percent of animals, plants and microbes that have survived The Great Dying.


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