Popular Posts Last 7 days_$type=three$meta=0$snip=0$rm=0$count=9$show=/search/label/Popular

Popular Posts Last 30 days_$type=three$meta=0$snip=0$rm=0$count=9$show=/search/label/Popular

Popular Posts Last year_$type=three$meta=0$snip=0$rm=0$count=9$show=/search/label/Popular

Popular Posts All time_$type=three$meta=0$snip=0$rm=0$count=9$show=/search/label/Popular

Islamophobia_$type=carousel$h=350$show=/search/label/Muslim%20World

Saudi Arabia$type=two$count=2$h=250$space=1$icon=1$m=0$sn=0$rm=0$show=/search/label/Muslim%20World

Iran_$type=three$count=3$h=250$space=1$icon=1$m=0$sn=0$rm=0$show=/search/label/Muslim%20World

Palestine$type=three$author=hide$comment=hide$rm=hide$date=hide$show=/search/label/Muslim%20World

Life on Earth may date back 3.95 bn years: study

SHARE:

Fossil evidence for early organisms on Earth is scarce, and rocks that remain from that period are often poorly preserved.

Paris - Rudimentary life may have existed on Earth 3.95 billion years ago, a time when our infant planet was being bombarded by comets and had hardly any oxygen, researchers said Wednesday.

A team presented what they say is the oldest-known fossil evidence for life on the Blue Planet -- grains of graphite, a form of carbon, wedged into ancient sedimentary rocks in Labrador, Canada.

The previous most ancient life traces were reported in March, from a site in Quebec estimated at between 3.8 billion and 4.3 billion years old, though an author of the new study called that dating process "highly controversial."

"This is the oldest evidence," Tsuyoshi Komiya of The University of Tokyo insisted in an email exchange with AFP.

"Our samples are also the oldest supracrustal rocks preserved on Earth" -- a type similar to the formation which contained the Quebec samples.

Fossil evidence for early organisms is scarce, and rocks that remain from that period are often poorly preserved.

A key difficulty for scientists on a quest to find the oldest life on Earth is proving that organic remains were produced by living organisms rather than geological processes.

This field of study is aimed not only at pinpointing the start of life on our planet, but also to shed light on the possibility of life having existed -- or still existing -- on other planets such as Mars.

For the new study, Komiya and a team studied graphite, a form of carbon used in pencil lead, in rocks at Saglek Block in Labrador, Canada.

They measured its isotope composition, the signature of chemical elements, and concluded the graphite was "biogenic" -- meaning it was produced by living organisms.

The identity of the organisms, or what they looked like, remains a mystery.

"We will analyse other isotopes such as nitrogen, sulphur and iron of the organic matter and accompanied minerals to identify the kinds of organisms," said Komiya of the next step.

"In addition, we can estimate the environment" in which the organisms lived by analysing the chemical composition of the rock itself.

If the findings are accurate, it means life took hold on Earth just a geological second after its formation some 4.5 billion years ago.

Before the Quebec fossils, which were also described in Nature, the oldest traces of life were found in Greenland's ice cap and dated to 3.7 billion years ago.

COMMENTS

Name

Ads,5,Afghanistan,75,Africa,26,Americas,5,Animals,36,Argentina,1,Asia,235,Australia,11,Austria,5,Bahrain,2,Bangladesh,18,Barcelona,1,Belgium,3,Brunei,1,Business,1300,Canada,4,Catalan,80,China,118,Cuba,3,Czech Republic,3,DR Congo,1,Egypt,22,Ethiopia,1,Europe,237,Fitness,14,France,26,Germany,37,Headlines,11,Health,169,Hillary Clinton,199,Hong Kong,2,Hungary,1,Iceland,1,India,104,Indonesia,9,International,75,Iran,77,Iraq,77,Ireland,2,Islamophobia,19,Israel,10,Italy,3,Japan,36,Jordan,1,Kenya,7,Kosovo,1,Kuwait,3,Lebanon,2,Libya,2,Lifestyle,302,Lithuania,1,Malawi,1,Malaysia,15,Malta,1,Maxico,3,Middle East,127,Muslim World,598,Myanmar,35,Nawaz Sharif,5,Nepal,3,Netherlands,2,New Zealand,9,Niger,1,Nigeria,2,Nobel Prize,81,North Korea,53,Norway,1,Opinion,26,Pakistan,1036,Palestine,36,Philippine,16,Pics,66,Poland,3,Popular,1,Qatar,93,Rohingya,118,Russia,45,Rwanda,1,Saudi Arabia,83,Science,144,Serbia,2,Showbiz,350,Somalia,4,South Africa,1,South Korea,7,Spain,60,Sports,1311,Sudan,1,Sweden,1,Switzerland,2,Syria,112,Taiwan,2,Technology,449,Thailand,5,Today IN History,24,Top News,994,Tunisia,1,Turkey,77,U.S.,301,UAE,21,UK,51,Ukrain,2,Venezuela,4,Videos,75,Vietnam,2,World,4824,Yemen,21,Zimbabwe,2,
ltr
item
Muslim Global: Life on Earth may date back 3.95 bn years: study
Life on Earth may date back 3.95 bn years: study
Rudimentary life may have existed on Earth 3.95 billion years ago, a time when our infant planet was being bombarded by comets and had hardly any oxygen, researchers said Wednesday.
https://3.bp.blogspot.com/-wqoAGwjWsNE/WcyxZp9Mb5I/AAAAAAAAiOM/IiWiQkuIl0MgFZXe7-eOvvMJuWbQjHmNQCLcBGAs/s640/Life%2Bon%2BEarth%2Bmay%2Bdate%2Bback%2B3.95%2Bbn%2Byears%252C%2Bstudy.jpg
https://3.bp.blogspot.com/-wqoAGwjWsNE/WcyxZp9Mb5I/AAAAAAAAiOM/IiWiQkuIl0MgFZXe7-eOvvMJuWbQjHmNQCLcBGAs/s72-c/Life%2Bon%2BEarth%2Bmay%2Bdate%2Bback%2B3.95%2Bbn%2Byears%252C%2Bstudy.jpg
Muslim Global
http://www.muslimglobal.com/2017/09/life-on-earth-may-date-back-395-bn.html
http://www.muslimglobal.com/
http://www.muslimglobal.com/
http://www.muslimglobal.com/2017/09/life-on-earth-may-date-back-395-bn.html
true
616431133175714168
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS CONTENT IS PREMIUM Please share to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy