Comet impact did not wipe out prehistoric humans
Washington: Comet explosions did not end the prehistoric human culture, known as Clovis, which existed in North America 13,000 years ago, according to a new research.
Researchers from Royal Holloway University, together with Sandia National Laboratories and 13 other universities across the United States and Europe, have found evidence that rebuts the belief that a large impact or airburst caused a significant and abrupt change to the Earth`s climate and terminated the Clovis culture. They argue that other explanations must be found for the apparent disappearance.
Clovis is the name archaeologists have given to the earliest well-established human culture in the North American continent. It is named after the town in New Mexico, where distinct stone tools were found in the 1920s and 1930s.
Researchers argue that no appropriately sized impact craters from that time period have been discovered, and no shocked material or any other features of impact have been found in sediments. They also found that samples presented in support of the impact hypothesis were contaminated with modern material and that no physics model can support the theory.
"The theory has reached zombie status. Whenever we are able to show flaws and think it is dead, it reappears with new, equally unsatisfactory, arguments," said Professor Andrew Scott from the Department of Earth Sciences at Royal Holloway.
"Hopefully new versions of the theory will be more carefully examined before they are published," Scott added.
The research was published in the journal Geophysical Monograph Series.
More from India
More from World
More from Sports
More from Entertaiment
- DNA : When will Indian govt take strong actions against terrorism?
- Drunk girl assaults Mumbai police in Worli
- Arun Jaitley upset with Subramaniam Swami's Twitter attack
- Bombay HC to pronounce verdict on entry of woman to Haji Ali Dargah today
- DNA: When will Indian govt take strong actions against terrorism? - Part II
- Special panel on India's NSG membership bid? We're not aware, says China
- Ruby Rai, Bihar Class 12 topper now under arrest for cheating, says she never wanted to top the exam
- Euro 2016: Iceland stun England in one of greatest ever shocks
- Three new suicide attacks in Lebanon village near Syria
- Preparing for Brexit, Britain may see new PM by early September