Dinosaurs could die before the fall of the asteroid
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the reason for the death of the dinosaurs could be not a meteorite.
It is believed that the fall of a giant asteroid is hardly the only culprit for the extinction of dinosaurs. However, new research suggests that formidable vertebrates could almost completely die out before the fall of the space alien. Analysis of fossilized shells of that period showed that the Ground was already tense before impact because of a volcanic eruption for some unknown reason warmed the oceans and raised the mercury levels to dangerous heights. So what really killed ?
Why the dinosaurs disappeared?
So often discussed at the present time, the climate change can happen on Earth is not the first time. To such conclusion experts from the University of Michigan, studied the fossilized shells of ancient molluscs. According to the official theory, Earth's collision with an asteroid resulted in a fatal for many species of climate change. In addition, raised into the atmosphere huge amounts of dust and stones which a few years do not permit the sun light to the surface of the planet, thereby destroying many species of plants. Despite the fact that the hypothesis about the collision of Earth with a giant asteroid seems the most preferable, it is not one of a kind. Thus, according to one version, could destroy massive volcanic eruptions that began about 66 million years ago and lasted for a million years. Volcanic eruptions caused the accumulation of large amounts of carbon dioxide, which ultimately was the main reason for the extinction of a number of living beings. However, what caused the eruption of such force?
most of the dinosaurs could have disappeared before the fall of the meteorite.
Discovered by scientists from Michigan shell, which became the main evidence of the new version of the mass extinction of living beings on our planet, contain high levels of mercury, which in itself is a symptom of volcanic eruptions of the past.
As the fossil shells have been found in Antarctica , Argentina, Sweden and Egypt. Showing the presence of large amounts of mercury, shell does not deny the fact of the asteroid itself: and the climate of the planet, and the eruption of volcanoes, and the fall of the meteorite could greatly affect the usual life of living organisms. And, as you might have guessed, is clearly not in the best side.
Researchers believe that the study found the shells may help to improve our understanding of ancient – and perhaps upcoming – events of climate change.
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