Oldest fossils ever found may not be fossils after all
February 21, 2011 by Lin Edwards
Photomontage made of 9 photomicrographs showing locations of three microstructures. Image credit: Nature, doi:10.1038/ngeo1084
(PhysOrg.com) -- A rock formation in Western Australia was the site of great excitement a couple of decades ago when it revealed evidence of the oldest fossils of bacteria ever found, but a new study casts doubt on those findings.
The Pilbara craton in the northwest of Western Australia is one of only two remaining areas of pristine Archaean (3.6-2.7 billion years old) crust remaining on Earth. (The other is is Kaapvaal in South Africa.) The region is renowned for its deposits of apex chert, a fine-grained cryptocrystalline material rich in silica and featuring microfibrous sedimentary rock. The Pilbara Apex Chert has been dated at 3.5 billion years old and contained what was thought to be filaments of the oldest fossilized cyanobacteria in the world.
There has been some debate about whether or not the deposits were really fossils since the formation is now believed to be a hydrothermal site rather than the remains of a shallow sea floor. The ancient remains of hydrothermal sites are sometimes mistaken for fossils.
Assistant professor of paleobiogeochemistry, Dr Alison Olcott Marshall and colleagues from the University of Kansas in the US decided to settle the debate by analyzing new samples of the Apex Chert. They cut small, 300 micrometer sections of the debatably biological filaments, but for the first time they also cut sections 30 micrometers long to enable more light to enter the samples.
The shorter sections revealed the filaments were actually fractures in the rock, filled with a dark mineral and a light, clear mineral. They used Raman spectroscopy to identify the minerals, which turned out to be hematite (dark) and quartz (light), neither of which are biological in origin.
Martin Brasier, of the University of Oxford, UK, who first proposed the formation was hydrothermal, said he was not surprised at the new studys results since in 2002 his team found a fossil known as the red banana, which led them to suggest many of the filaments identified as fossils were hematite.
Olcott Marshall's study also identified a carbonaceous material in the rock surrounding the filaments, and this material could be biological in origin. Dr Olcott Marshall thinks this material might have been sampled accidentally by previous researchers and led to them identifying the filaments as biological.
More information: Haematite pseudomicrofossils present in the 3.5-billion-year-old Apex Chert, Craig P. Marshall, Julienne R. Emry, & Alison Olcott Marshall, Nature Geoscience (2011) advance online publication, doi:10.1038/ngeo1084
via: Nature News
© 2010 PhysOrg.com
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Feb 21, 2011
Rank: 1.1 / 5 (46)
People so desperate to be a meaningless pile of goo.
Feb 21, 2011
Rank: 5 / 5 (25)
Feb 21, 2011
Rank: 4.8 / 5 (21)
I never trusted those possible fossils myself. Later stuff has actual cells. That stuff is intriguing though. May still be fossil stromatolites. The odds aren't as good now.
So QC are you into YEC or OEC Creationism? Never did get it straight with you as you are pretty adamant about Evolution for an OEC. Do you believe in the Flood? If so when was it? And how do you deal with all those galaxies we keep discussing if you are a YEC?
I find it interesting how so many of the Creationists keep trying to pretend they are not really fundamentalists. Seems immoral to me.
Ethelred
Feb 21, 2011
Rank: 4.8 / 5 (19)
What must it be like, what must it BE like, to go through life pontificating about nothing much at all to nobody in particular with no effect but to look silly?
Feb 21, 2011
Rank: 1.4 / 5 (30)
In what way would galaxies contradict any manner of creation? What part of "Omnipotent" didn't you get?
It is difficult to put an exact timing on the flood because there are gaps in the records.
*gasp* we don't know everything, other than the fact that it had to have happened relatively recently, else it would have been forgotten. Instead, variations of oral and written records of this event persist in almost all cultures which had obviously spread out after the tower of Babel incident.
Feb 21, 2011
Rank: 4.1 / 5 (26)
I love it when the religious do this.
You better hope your god is omnipotent because those gaps just get smaller and smaller. I guess the Planck scale isn't a barrier to Him though.
Feb 21, 2011
Rank: 4.6 / 5 (22)
Feb 21, 2011
Rank: 4.5 / 5 (24)
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Feb 21, 2011
Rank: 4 / 5 (15)
Ethelred
ryggesogn2 AKA Marjon on the Somali pirates.
This stays till the end of the month when there is room.
Feb 21, 2011
Rank: 4.7 / 5 (19)
The Australian Aboriginals - who have continuously inhabited the continent for at least 30,000 years - have a central myth, the 'Rainbow Serpent'. This is the longest-lasting continous belief known - there is evidence that the belief was extant at least 8,000 years ago.
So, funny how the Aboriginal peoples were all wiped out something 4,000 years ago, without realising it, and with no apparent break in their fairly unique culture - with the rainbow Serpent myth a case in point.
And needless to say, without the slightest scrap of evidence that Australia was very recently underwater!
Feb 21, 2011
Rank: 4.5 / 5 (17)
What does this have to do with atheism? Plenty of Christians are evolutionists, probably majority. Not to mention other faiths.
Young Earth creationists are like those peasants in the middle ages that could not understant that the Earth is in fact, round. Funny and sad at the same time.
Feb 21, 2011
Rank: 2.5 / 5 (4)
Feb 21, 2011
Rank: 4.7 / 5 (14)
You don't get to decide whether other people can or can't have meaningful lives.
Feb 21, 2011
Rank: 4.7 / 5 (12)
Feb 21, 2011
Rank: 4.6 / 5 (9)
It's pretty easy to see how such people could come up with 'biblical flood' stories related to this un-expected and frightening natural occurance.
Feb 21, 2011
Rank: 5 / 5 (15)
Feb 21, 2011
Rank: 5 / 5 (12)
"Don't hold your breath."
Do you think people would be bickering like that if they didn't ENJOY it? It's not like it really accomplishes much besides an entertainment.
"It's a hobby, like trainspotting, but more like spotting train wrecks."
Feb 21, 2011
Rank: 4.8 / 5 (8)
Feb 21, 2011
Rank: 2.5 / 5 (4)
Actually it's about the Hebrews AND their enemies which is pretty much everybody else. The offspring mentioned who did not contribute to the holy line went on to found these enemy tribes. Some are obvious, some are not. People have taken great pains to link today's pops to these wannabes.
Feb 21, 2011
Rank: 4.6 / 5 (9)
Feb 21, 2011
Rank: 1.2 / 5 (17)
QC.....your my fav....hold true to your thoughts...no matter how ill-formed they are...good job QC!!!:):):):):)
@MRSbutterworth!!!,,,HAHAHAHAHA i love it,,, let see what these retards have to say about that....prolly somthing about jesus the time traveler!!!
Feb 21, 2011
Rank: 5 / 5 (7)
Epic of Atrahasis is even older. Only downside on Gilgamesh is that Noah's vessel design would have been more stable vessel.
Feb 21, 2011
Rank: 1 / 5 (15)
See: "Neutron Repulsion" [The APEIRON Journal, 19 pages, in press, 2011]
arxiv.org/pdf/1102.1499v1
youtube.com/watch?v=sXNyLYSiPO0
With kind regards,
Oliver K. Manuel
Feb 22, 2011
Rank: 5 / 5 (3)
Feb 22, 2011
Rank: 5 / 5 (5)
Single celled life rarely leaves enough behind to fossilize. We KNOW that there was life pretty early as the iron that was in solution was being oxidized and free oxygen needs life to exist in any large quantity.Actually some of us do. I am pretty strong Exodus as well but after that I really see no need to read it except parts here and there just like many other books. Still haven't finished Origins for instance. Hard to maintain interest when I already know most of it. I read it when I can't find something else.
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Feb 22, 2011
Rank: 5 / 5 (5)
What is odd is how much of that is about people that, if the Flood wasn't a myth, have no ancestors. MANY generations of ancestors of Cain. Somehow Grendel wasn't mentioned.
Ethelred
ryggesogn2 AKA Marjon on the Somali pirates.
This stays till the end of the month when there is room.
Feb 22, 2011
Rank: 5 / 5 (5)
NOW Marjon clearly prefers this to farming. Farming must require too much reality for him.
Every once in a while someone that was ignorant about science actually learns something real. That accomplishes something real as opposed to mere entertainment.
Ethelred
ryggesogn2 AKA Marjon on the Somali pirates.
This stays till the end of the month when there is room.
Feb 22, 2011
Rank: not rated yet
Feb 22, 2011
Rank: 5 / 5 (3)
Oh, is that the "mysterious neutral lurker" (who is obviously fascinated with endless bad-tempered squabbling) that we hear so much about? Sort of like Bigfoot ... but we have PICTURES of Bigfoot.
I concede that I have come up with some interesting insights in my arguments with crackpots. However, cracking the books would be a more productive use of time, and in the end it's still only justifiable on the basis of an entertainment. Even I can only crack the books for so long.
Could be worse. Look at the comment sections on YouTube.
Feb 22, 2011
Rank: 1.6 / 5 (14)
So please inform us, oh informed one, how come if the universe is about 15Billion years old and it has an estimated diameter of about 90BLY, that we have such a uniform radiation distribution in the CMB?
Obviously the big bang model has the same light travel problem you want to sing about.
Feb 22, 2011
Rank: 5 / 5 (13)
CMB is the oldest light we can see, and it was emmited about 13 billion years ago, right after the big bang. There is no light travel problem in big bang model.
Feb 22, 2011
Rank: 5 / 5 (11)
90 bly is an extrapolated diameter of expanded observable universe in present time. About 14 billion is radius of observable universe, as seen by observation.
Feb 22, 2011
Rank: 3.8 / 5 (6)
I began to point out this WonderRandLand was funded by bloody handed piracy. After the usual 6 to 10 evasions he actually said this:
More after the break
Feb 22, 2011
Rank: 5 / 5 (4)
Then he annoyed me by insisting on dragging his political crap into the skin color thread. So he won the Ethelred's Sig For a Month Award. He is the second winner. QubitTamer won it twice.
Ethelred
ryggesogn2 AKA Marjon on the Somali pirates.
This stays till the end of the month when there is room.
Feb 22, 2011
Rank: 5 / 5 (4)
Recently a guy, Agile_Mathew, seemed to have begun to question the Creationist viewpoint but he has gone walkies. It is pretty rare to even get that much.
I gave up bad temper myself. I prefer even tempered squabbling.
If you look hard enough you will find a few posts by me there. 500 character limit shows that less is not always more and it scrolls of the screen too fast. Waste of time.
Ethelred
ryggesogn2 AKA Marjon on the Somali pirates.
This stays till the end of the month when there is room.
Feb 22, 2011
Rank: 3.7 / 5 (6)
When was the flood Kevin? How long ago? An actual century will do. You don't need to go Ussher about it and give the time of the day as well as the month and the year. Surely you can produce at least as much precision as Ussher but the century will do.
Of course your question shows you don't know what you are talking about but I will be happy to clear that up for you. Ignorance is curable. Even moderate stupidity can be overcome by those that try hard enough.
Ethelred
ryggesogn2 AKA Marjon on the Somali pirates.
This stays till the end of the month when there is room.
Feb 22, 2011
Rank: 5 / 5 (2)
"Kill kill kill for peace" -- as they used to say Way Back When.
Feb 22, 2011
Rank: 1.7 / 5 (11)
QC, ER, et al: Dogmatic scientists and dogmatic religionists are identical twins - hiding under different cloaks of respectability.
Dogmatic, arrogant certainty has no place in honest science or religion.
"Truthing" is a process of continuous discovery, via
a.) Science: Careful observations and experiments, or
b.) Spirituality: Quiet reflection, meditation or prayer.
"Truthing" is a path out of the ego cage.
"Truthing" generates humility and reverence.
"Truthing" may be the most sane way of living.
"Truthing" led caused Mahatma Gandhi to conclude:
“Truth is God. God alone is and nothing else exists.”
"Truthing" led me to these conclusions about creation:
youtube.com/watch?v=AQZe_Qk-q7M
youtube.com/watch?v=sXNyLYSiPO0
Feb 22, 2011
Rank: 5 / 5 (8)
Feb 22, 2011
Rank: not rated yet
Feb 22, 2011
Rank: 4 / 5 (1)
I agree. Mahatma Gandhi recommended non-violence (ahimsa) as a way of life.
Feb 22, 2011
Rank: 5 / 5 (6)
Theist:
A meaningless pile of goo.
Feb 23, 2011
Rank: 5 / 5 (4)
So that was NOT a path to truth. It is a path that lead to you thinking the Sun is a neutron star. Which it cannot be as the smallest neutron star is LARGER than our Sun. And that is based on the Pauli-Exclusion Principle. If we add in YOUR fantasy of a long distance force of neutron repulsion neutron stars would be even larger than the present prediction.You should try it then.
More
Feb 23, 2011
Rank: 5 / 5 (3)
Ethelred
Feb 23, 2011
Rank: 3 / 5 (4)
Feb 23, 2011
Rank: 2 / 5 (4)
We may never have the whole Truth,
nor a complete understanding of God.
Can we accept that unpalatable fact?
Feb 24, 2011
Rank: 3 / 5 (2)
I love that old chinese(?) blessing: "may all your dreams come true, except one"
Feb 24, 2011
Rank: 5 / 5 (2)
Hard to understand something for which there is no evidence of it's existence. We aren't likely to understand Xeno, Quetzalcoatl, or Ahuramazda either.
I can. I have seen videos of both Carl Sagan and Richard Feynman, separately, discussing that they weren't likely to get the answers to all their questions.
I can accept the reality of it. I don't have to like it. I want the biochemists to quit frigging around and get to work on immortality. It is coming. Just a matter of time and that is what I want. More time. Heck if I get enough time I might learn how to spell sep-e-ratly correctly without using a spellcheck. I pronounce it with that E. Oh for the fixtenn hundredf in regard to fpelling.
Ethelred
Feb 24, 2011
Rank: 1 / 5 (4)
The evolution of life constrains solar models.
The SSM (standard solar model) predicts a faint early Sun and a frozen Earth.
The PCS* (pulsar centered star) model predicts a hotter Sun and a warmer Earth.
* arxiv.org/pdf/0905.0704
arxiv.org/pdf/1102.1499v1
With kind regards,
'Oliver K. Manuel
Feb 25, 2011
Rank: 5 / 5 (1)
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Feb 25, 2011
Rank: not rated yet
Plus there is physical evidence the that we DID have a snowball Earth with a broad band at the equator unfrozen.Which would fail to produce the snowball evidence that does exist. The evidence isn't certain but there is enough to make it more likely than an Earth that did not have a snowball stage. Early life on Earth was not very active. That seems to come in the last billion years.
Ethelred
Feb 25, 2011
Rank: 5 / 5 (3)
Feb 28, 2011
Rank: not rated yet
one f the very few times you raise an interesting question.