The causes of Dinosaurs Extinction
A large asteroid fell to earth became the main cause of death of the dinosaurs. The statement expressed in a panel of scientists that followed 41 experts from around the world. In the meeting it was agreed that the mass extinction occurred more than half of all species on this planet, including dinosaurs and several large marine reptiles.
They concluded that the impact occurred about 65 million years ago, has cleared the way for mammals to become dominant species on earth. An asteroid of 15 kilometers is believed to have hit the planet earth with the power of a billion more powerful than the atomic bomb on Hiroshima.
This resulted in crater known as Chicxulub crater buried under the Yucatan Peninsula. Asteroid-nearly 15 times the size of a football field, exploded and crashed at high speed into the atmosphere.
In the study it is believed, the incident sparked a series of events that cause global winter and destroy most life on earth in a matter of days.
Scientists previously have argued about whether the so-called Cretaceous-Tertiary (KT) caused by an asteroid or by volcanic activity in India more than 1.5 million years. For the new study, scientists analyzed 20 years of work by palaeontologists, geochemists, climate modellers, geophysicists and sedimentologists.
They concluded that the geological record shows the events that triggered the extinction destroyed the marine ecosystem and the soil quickly, is the impact of an asteroid. It’s the only explanation that makes sense.
Dr Joanna Morgan, from Imperial College London, said: “We now have great confidence that an asteroid is the cause of the KT extinction. It is shrouded in the darkness of the earth and cause global winter, killing many species can not adapt to the environment of this hell.”
Another author Dr Gareth Collins, also of Imperial College, adding that the blast of hot rock and gas looks like a giant fireball on the horizon, grilling living in the immediate vicinity that could not find shelter.
“Ironically, while this marks the end of hell 160-million-year dinosaur, turned out to be a big day for mammals, who has lived in the shadow of dinosaurs before this. KT Extinction was a pivotal moment in the history of the earth, which eventually paved the way for humans to become dominant species on Earth. “