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The original observation was that in the fossil records there is a layer with high levels of iridium and osmium at the time of dinosaur extinction. Iridium and osmium are common is asteroids. For the layer to be all over the globe it must have been a major strike which would have caused global wide climate change causing a mass extinction.
What else can I help you with?
Why do you think there are no dinosaurs now explain?
The dinosaurs all died out. A major catastrophe, probably an asteroid impact, caused their extinction.
How does the theory of asteroid impact relate to the extinction of Dinosaurs?
I does not. The asteroid would of had to knock out the entire earth for that to happen. If you think of the facts it is just not possible.
What did they called that wipe out the dinosaurs?
The extinction event that wiped out dinosaurs is called the Cretaceous-Tertiary Extinction Event (K-T Extinction, for short... Yes, that is supposed to be a K). The crater left by the asteroid impact is called the Chixculub crater.
What era ended with a massive impact?
The Mesozoic era ended with a massive impact caused by an asteroid hitting Earth, leading to the extinction of the dinosaurs.
What is the name of the fallen asteroid?
The fallen asteroid is often referred to as the Chicxulub impactor, named after the location of its impact on the Yucatán Peninsula in Mexico. This asteroid impact is believed to have contributed to the extinction of the dinosaurs around 66 million years ago.
What was the alvarez asteroid theory?
The Alvarez hypothesis proposes that the mass extinction of dinosaurs was caused by a large asteroid impact on Earth. The impact released massive amounts of debris and dust into the atmosphere, blocking sunlight and leading to a drastic cooling effect that disrupted the global climate. This theory is widely accepted as a major factor in the extinction event that occurred about 66 million years ago.
Did the breakup of Pangaea have a effect on dinosaur extinction?
No, the breakup of Pangaea occurred long before the mass extinction of dinosaurs. The main factor believed to have caused dinosaur extinction is an asteroid impact that occurred around 66 million years ago.
Element traced to the extinction of the dinosaurs?
The element that has been linked to the extinction of the dinosaurs is iridium. High levels of iridium have been found in sediment layers around the world from the time of the dinosaur extinction, suggesting that it may have come from an asteroid impact.
What may have caused the first mass extinction 65 million years ago?
The leading theory for the first mass extinction 65 million years ago is a catastrophic event such as an asteroid impact. This event is believed to have led to environmental changes that caused the extinction of the dinosaurs and many other species.
Where did the asteroid hit earth?
The asteroid that led to the extinction of the dinosaurs approximately 66 million years ago hit what is now the Yucatan Peninsula in Mexico. The impact site is known as the Chicxulub crater.
Do scientists really know what happend to the dinosaurs?
Science doesn't really work like that; but there is good evidence that a major asteroid impact happened shortly before the mass extinction of the dinosaurs. To complicate the story slightly, the dinosaurs had been declining before the asteroid hit - so it may be the asteroid may have speeded an existing process. There is also good evidence that modern birds are descended from dinosaurs.
3 possible contribution of extinction of the dinosaurs between the creatceous and tertiary?
Impact event: The most widely accepted theory is that a large asteroid impact caused drastic environmental changes leading to the extinction of the dinosaurs. Climate change: Volcanic activity and changes in atmospheric composition could have led to significant climate disruption, affecting the food chain and ultimately leading to the extinction of the dinosaurs. Competition and evolution: The rise of new species, particularly mammals, may have outcompeted dinosaurs for resources, leading to their decline and eventual extinction in the Cretaceous-Tertiary boundary.
