November 17, 2017

Dinosaurs extinct because asteroid hit the wrong spot on Earth, scientists say

13 November 2017, 03:32 | Edward Lowe

Getty HUGE The supersized creatures roamed the Earth 65 million years ago


The sub-freezing temperatures persisted for over three years - enough to destroy plant life and everything else up the food web. According to research published this week by British researchers at Imperial College London found the asteroid impact was even more devastating than previously thought. A recent study shows that there was only a 13% chance of the mass extinction of the species, which occurred 66 million years ago, and if the asteroid, which wiped out the dinosaurs from our planet, had struck nearly anywhere except for where it actually did, the dinosaurs could have survived and who knows they could be our pets today, or we theirs!

Scientists, in general, estimate that the asteroid strike would have released energy a billion times more than the combined power of the atom bombs that destructed Hiroshima and Nagasaki in 1945. The scientists say that the location had cast reservoirs of crude oil and hydrocarbons in the shallow sea waiting to be set ablaze. The force of the impact heated the materials, "forming stratospheric soot and sulfate aerosols and causing extreme global cooling and drought", the scientists report in the paper.

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The researchers used global climate model calculations to simulate the amount of soot that asteroid impacts would have generated depending on the amount of hydrocarbon and sulfur in rocks. German scientists have also speculated on the significance of the site of impact. That soot caused global changes to the climate that turned the Earth into a hellscape and brought about the mass extinction of dinosaurs and other animals. This much soot can easily fill 150 fully roofed baseball arenas. They concluded that the significant cooling and mass-extinction event could have only occurred if the asteroid had hit hydrocarbon-rich areas.

But now a new study has revealed that actually there was only a 13% chance of the event causing mass extinction. How is this so? This is because the catastrophic chain of events could only have occurred if the asteroid had hit the hydrocarbon-rich areas occupying about 13% of Earth's surface.

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But that only happened because the rock landed in the right, or wrong, location, dropping onto areas rich in hydrocarbon.

Currently, the researchers are also studying the level of climate change that could have been caused by huge volcanic eruptions, which would have had a bearing on other mass extinctions. Now again the question arises, regardless of which way went the evolution if dinosaurs managed to survive, and other, more recent types late in development. For any further need, you can take notes.

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