Seems like we are finding out more about our world every day; which is a good thing!
Seems like we are finding out more about our world every day; which is a good thing! We should allow different doctors and scientists to voice their opinions, challenge and question current theories. ONE crater discovery changed the entire way “scientists” hypothesis what killed the dinosaurs. Some scientist believe that volcanic activity and toxic fumes chocked out the majority of life on the planet.
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A new study has thrown doubt on the theory that the dinosaurs were wiped out solely by a mountain-sized asteroid - instead pointing the finger at volcanoes.
Co-author Brenhin Keller, an assistant professor of earth sciences at Dartmouth College in New Hampshire, said: "All other theories that attempted to explain what killed the dinosaurs, including volcanism, got steamrolled when the Chicxulub impact crater was discovered."
But, he added, there is very little evidence of similar impact events that coincided with the other mass extinctions despite decades of exploration.
A series of eruptions in present-day Siberia triggered the most destructive of the mass extinctions about 252 million years ago, releasing a gigantic pulse of carbon dioxide into the atmosphere and nearly choking off all life.
Volcanic eruptions also rocked the Indian subcontinent around the time of the great dinosaur die-off, creating what is known today as the Deccan plateau. This, much like the asteroid strike, would have had far-reaching global effects, blanketing the atmosphere in dust and toxic fumes, asphyxiating dinosaurs and other life in addition to altering the climate on long time scales.
"While the total amount of carbon dioxide being released into the atmosphere in modern climate change is still very much smaller than the amount emitted by a large igneous province, thankfully," Keller said, "we're emitting it very fast, which is reason to be concerned."
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