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The Most Important Records For Dating Old Objects Were Just Found In A Japanese Lake
TBI ^ | 10-18-2012 | Dina Spector

Posted on 10/18/2012 2:09:47 PM PDT by blam

The Most Important Records For Dating Old Objects Were Just Found In A Japanese Lake

Dina Spector
Oct. 18, 2012, 2:01 PM

Lake Suigetsu in Japan

For tens of thousands of years, leaf and twig fossils have remained undisturbed at the bottom of Lake Suigetsu in Japan.

By drilling into well-preserved layers of sediment and extracting cores containing those leaves and twigs, researchers have obtained some of the most accurate records of radiocarbon in the atmosphere yet.

These records give a precise estimation of how much radioactive carbon there was in the atmosphere in any given year, and could help increase the accuracy of how we estimate the age of fossils.

Radiocarbon, or Carbon 14, is what archaeologists and anthropologists use to figure out how old things are.

Carbon 14 is naturally produced in the atmosphere. Because carbon is an integral part of every living thing, all organisms, like animals and plants, take in carbon while they are alive. So, when they die, they contain the same amount of Carbon 14 as their environment.

Scientists know that Carbon 14 has a half-life of 5,730 years, meaning that in 5,730 years, half of the Carbon 14 in a sample will turn into normal, non-radioactive carbon.

24,700 year-old-leaf dated by radiocarbon

So, long after an organism dies, scientists can compare the amount of Carbon 14 in a sample to records of atmospheric radiocarbon in sediments of different ages.

They can then use this information to calculate how long ago something like a tree or a human stopped taking in radioactive carbon, which indicates when they stopped living. This kind of data can be used to, for example, estimate when modern humans arrived in Europe.

(snip)

(Excerpt) Read more at businessinsider.com ...


TOPICS: News/Current Events
KEYWORDS: dating; godsgravesglyphs; japan; radiocarbon; treerings
The research appears in the October 19 issue of the journal Science.
1 posted on 10/18/2012 2:09:47 PM PDT by blam
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To: SunkenCiv

GGG Ping.


2 posted on 10/18/2012 2:10:35 PM PDT by blam
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To: blam

3 posted on 10/18/2012 2:13:53 PM PDT by JoeProBono (A closed mouth gathers no feet - Mater tua caligas exercitus gerit ;-{)
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To: blam

Dating old objects?

Clinton: “You know, if I were a single man, I might ask that mummy out. That’s a good- looking mummy”.

Or, do they mean Laz hitting Helen Thomas?

[ducks and covers]


4 posted on 10/18/2012 2:15:38 PM PDT by dagogo redux (A whiff of primitive spirits in the air, harbingers of an impending descent into the feral.)
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To: dagogo redux
Dating old objects?

Visit her profile at hxxp://match.com/crusty19thcenturychicklookingforfun


5 posted on 10/18/2012 2:21:01 PM PDT by library user
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To: blam
Somebody wants to date old objects???

Helen Thomas is probably available.

6 posted on 10/18/2012 2:21:17 PM PDT by gov_bean_ counter (ObamaCare is an assault on the unborn, infirmed and elderly. GOP, repeat this as necessary...)
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To: blam
These records give a precise estimation of how much radioactive carbon there was in the atmosphere in any given year

???


7 posted on 10/18/2012 2:36:45 PM PDT by Roccus
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To: blam
Because carbon is an integral part of every living thing, all organisms, like animals and plants, take in carbon while they are alive.

Would someone please tell the Glowbull Warming fruitcakes this basic high school science class fact!?! Their War on Carbon is as insane as a War on Oxygen.

8 posted on 10/18/2012 2:39:59 PM PDT by TigersEye (dishonorabledisclosure.com - OPSEC (give them support))
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To: gov_bean_ counter

Bill Clinton has dibs on any female mummies they find.


9 posted on 10/18/2012 2:45:55 PM PDT by TigersEye (dishonorabledisclosure.com - OPSEC (give them support))
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To: TigersEye

Or the War on Hydrogen Hydroxide.


10 posted on 10/18/2012 2:56:14 PM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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To: blam

How do we know it hasn’t been disturbed — by earthquakes and such?


11 posted on 10/18/2012 2:56:49 PM PDT by smokingfrog ( sleep with one eye open (<o> ---)
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To: DuncanWaring

Hydrogen dioxide. Let’s not start anymore wars on life-sustaining chemicals.


12 posted on 10/18/2012 3:02:25 PM PDT by TigersEye (dishonorabledisclosure.com - OPSEC (give them support))
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To: TigersEye
Hydrogen dioxide would be "HO2".
13 posted on 10/18/2012 3:41:35 PM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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To: DuncanWaring
OK, well, we don't need a war on that. If it even exists.

But H2O would be dihydrogen monoxide wouldn't it?

There is a war on C12H22O11. Given its role in brain functioning that may give us another clue as to where liberals come up with this crap. lol

14 posted on 10/18/2012 3:48:40 PM PDT by TigersEye (dishonorabledisclosure.com - OPSEC (give them support))
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To: blam

“tens of thousands of years..” sounds like a precise estimation just like “a near miss”.


15 posted on 10/18/2012 3:49:42 PM PDT by count-your-change (You don't have to be brilliant, not being stupid is enough.)
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To: DuncanWaring
By golly you were right. I didn't realize that hydrogen hydroxide was another name for dihydrogen monoxide. I'm afraid the war on it is already in full swing. Fortunately there is a group of evil capitalists, like us, who are fighting back.

DHMO

16 posted on 10/18/2012 4:02:39 PM PDT by TigersEye (dishonorabledisclosure.com - OPSEC (give them support))
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To: TigersEye

There are a lot of people who call it dihydrogen monoxide, but I think it’s actual chemical name, based on its molecular structure, would be hydrogen hydroxide (H-OH).

Or so I’ve been told.


17 posted on 10/18/2012 4:04:46 PM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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To: blam

So now we’re going to date something by measuring radioactivity in Japan?

I don’t think so, Tim!

Jus kiddin. I mean they do have slightly elevated readings there these days...


18 posted on 10/18/2012 4:10:09 PM PDT by djf (Political Science: Conservatives = govern-ment. Liberals = givin-me-it.)
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To: blam; StayAt HomeMother; Ernest_at_the_Beach; decimon; 1010RD; 21twelve; 24Karet; 2ndDivisionVet; ..

 GGG managers are SunkenCiv, StayAt HomeMother & Ernest_at_the_Beach
Thanks blam.

To all -- please ping me to other topics which are appropriate for the GGG list.


19 posted on 10/18/2012 6:09:27 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: TigersEye
A war on oxygen isn't as insane as it sounds.

It is extremely destructive—hence the term “oxidation”. Engineers spend countless hours attempting to offset its effects on nearly anything they design & build. It costs billions of dollars per year to prevent its damaging effects, and at least ten times that to mitigate or repair its ravages.

Combined with relatively modest heat, it sustains combustion; the higher the concentration, the more violent the combustion, and the less heat it takes to begin.

There are documented cases of piles of old automobile tires spontaneously combusting just from the heat of reaction between the free oxygen present combining with the steel ‘cords’ in the tires, as they rust!

The toll of destroyed homes, businesses, and lost lives from free oxygen violently reacting with oily rags, just from the minuscule heat generated by the oil drying, is staggering!

Then there are underground coal seams that have spontaneous combusted due to the presence of —again!— OXYGEN, and have burned for decades; perhaps even centuries!

Between global warming, and any increase in free atmospheric oxygen, the entire earth will spontaneously combust!

It also is terribly inimical to life: The Oxygen Catastrophe nearly wiped out ALL life on Earth! It could happen again!

In moderately high concentrations, it leads to dehydration of lungs & mucous membranes, intoxication, and uncontrollable euphoria in man & animals; it even has deleterious effects on plants. At slightly higher concentrations, it leads to death of both plants and animals.

Oxygen is thus a dangerous (and, indeed, is so labeled when transported or stored!) unstable, and poisonous gas that must be closely monitored, controlled, and ultimately cleansed from the atmosphere.

When is the EPA going to do its job!?!

20 posted on 10/18/2012 9:00:58 PM PDT by ApplegateRanch (Love me, love my guns!©)
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To: ApplegateRanch
That is a lot to digest. In order to achieve the proper state of satori to fully meditate on that I am going to have to light a stick of incense made from pure Nicotiana tabacum Linné high in C10H14N2 and ingest some suitable formulation containing an adequate concentration of C2H5OH. I cannot take lightly these serious health concerns you have brought to my attention.

It might take me a while to get back to you.

21 posted on 10/18/2012 9:21:32 PM PDT by TigersEye (dishonorabledisclosure.com - OPSEC (give them support))
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To: TigersEye

Most of you are too young to remember the War on Fluoride as an additive to water supplies to prevent dental cavities,

There were knock-down and drag-out arguments in City Council meetings over this issue. Proponents cited science and Nature(fluorides naturally occurring in water supplies protected teeth but left brown stains)while opponents were convinced that it was a Communist plot to poison us.

Still crops us occasionally with mostly environmentalists and natural foods enthusiasts now taking the place of ultra conservatives as opponents.


22 posted on 10/19/2012 9:30:41 AM PDT by wildbill (You're just jealous because the Voices talk oMnly to me.)
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To: blam

What do they know? “Carbon eats our planet”. Our President says so.


23 posted on 10/19/2012 7:37:52 PM PDT by Mygirlsmom (People on stage at 2nd debate: 1 Romney 2 Eye Candy 3 Lie Candy)
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