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Keyword: carbondating

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  • Many global warming studies may be wrong as carbon dating found to be highly unreliable (trunc)

    09/09/2015 4:47:32 PM PDT · by Straight Vermonter · 11 replies
    South China Morning Post ^ | 9/9/15 | Stephen Chen
    Full title: Many global warming studies may be wrong as carbon dating found to be highly unreliable for organic matter over 30,000 years old Radiocarbon dating, which is used to calculate the age of certain organic materials, has been found to be unreliable, and sometimes wildly so - a discovery that could upset previous studies on climate change, scientists from China and Germany said in a new paper. Their recent analysis of sediment from the largest freshwater lake in northeast China showed that its carbon clock stopped ticking as early as 30,000 years ago, or nearly half as long as...
  • Fossil-Fuel Emissions Causing Huge Impact on Radiocarbon Dating

    07/24/2015 3:56:42 PM PDT · by BenLurkin · 45 replies ^ | Fri, 07/24/2015 - 13:26 | Gloria Bradley
    Radiocarbon dating which is used to estimate the age of every particular thing on earth is facing big threat from the fossil fuel and carbon in the atmosphere. Researchers said excess of carbon in atmosphere due to burning of fossil fuel could reduce the accuracy of Radiocarbon dating. Heather Graven, a climate-physics researcher at Imperial College London, after an analysis has found that emissions from fossil fuels are artificially raising the carbon age of the atmosphere. ... "Combustion of fossil fuels is diluting the fraction of atmospheric carbon dioxide containing radiocarbon. This is making the atmosphere appear as though it...
  • Core sample sends carbon clock farther back in time

    10/20/2012 12:07:06 PM PDT · by neverdem · 12 replies
    NATURE NEWS ^ | 18 October 2012 | Ewen Callaway
    Sediment from Japanese lake provides more accurate timeline for dating objects as far back as 50,000 years. The carbon clock is getting reset. Climate records from a Japanese lake are set to improve the accuracy of the dating technique, which could help to shed light on archaeological mysteries such as why Neanderthals became extinct. Carbon dating is used to work out the age of organic material — in effect, any living thing. The technique hinges on carbon-14, a radioactive isotope of the element that, unlike other more stable forms of carbon, decays away at a steady rate. Organisms capture a...
  • The Sea Peoples, from Cuneiform Tablets to Carbon Dating

    10/04/2012 3:01:40 PM PDT · by SunkenCiv · 27 replies
    PLOS ONE ^ | David Kaniewski et al (see below)
    Whereas the Sea People event constitutes a major turning point in ancient world history, attested by both written and archaeological (e.g. Ugarit, Enkomi, Kition, Byblos) evidence, our knowledge of when these waves of destructions occurred rests on translation of cuneiform tablets preceding the invasions (terminus ante quem) and on Ramses III's reign (terminus post quem). Here, we report the first absolute chronology of the invasion from a rare, well-preserved Sea People destruction layer (Fig. 2) from a Levantine harbour town of the Ugarit kingdom. The destruction layer contains remains of conflicts (bronze arrowheads scattered around the town, fallen walls, burnt...
  • More Fluctuations Found in Isotopic Clocks

    08/17/2012 11:21:22 AM PDT · by fishtank · 204 replies
    Institute for Creation Research ^ | 8-17-2012 | Brian Thomas
    More Fluctuations Found in Isotopic Clocks by Brian Thomas, M.S. | Aug. 17, 2012 Age-dating a rock using its radioactive isotopes only works by assuming that the rate at which that "clock" ticks was constant in the past and essentially identical to that in the present. Not long ago, scientists discovered excess helium in crystals1 and "orphaned" polonium radiohalos,2 both of which imply that the decay rates of isotopes commonly used to date earth rocks were dramatically accelerated in the past. Even today, researchers are finding small but significant changes in isotope decay rates, and these add credibility to the...
  • Are dinosaurs fossils really that old? [vanity]

    10/28/2011 6:39:41 AM PDT · by Ancient Drive · 226 replies · 1+ views
    I read that carbon dating method is only accurate for up to 30,000 yrs. So how are scientists coming up with millions yrs. old fossils? For all we know dinosaurs died off not millions but 100's of thousands of yrs ago.

    08/18/2009 7:35:45 PM PDT · by The Ignorant Fisherman · 16 replies · 1,123+ views
    The Ignorant Fishermen Blog ^ | 8/18/09 | Dr. David Menton
    Much of the controversy between evolutionists and creationists concerns the age of the earth and its fossils. Evolution, depending as it does on pure chance, requires an immense amount of time to stumble upon anything remotely approaching the complexity we see in even the simplest living things. For over 1200 years, geologists have attempted to devise methods for determining the age of the earth that would be consistent with evolutionary dogma. At the time Darwin's Origin of Species was published [1859], the earth was “scientifically” determined to be 100 million years old. By 1932, it was found to be 1.6...
  • Carbon dating shows humans make new heart cells - The cold war helps settle a hot debate about...

    04/03/2009 12:29:00 AM PDT · by neverdem · 2 replies · 442+ views
    Nature News ^ | 2 April 2009 | Monya Baker
    The cold war helps settle a hot debate about how hearts grow.New cells in old hearts.Punchstock Fallout from nuclear bomb tests during the cold war has just yielded encouraging news for those searching for ways to reverse heart disease.A team led by Jonas Frisén from the Karolinska Institute in Stockholm has shown that adult human hearts make new muscle cells, albeit very, very slowly1.Human heart cells that can generate cardiomyocytes in culture have been identified before. But how the heart regenerates naturally has been hotly contested, says Kenneth Chien of the Harvard Stem Cell Institute in Cambridge. "This study shows...
  • New: Shroud of Turin carbon dating proved erroneous ( performed on non-original cloth sample)

    09/28/2008 8:19:34 AM PDT · by dascallie · 306 replies · 4,441+ views
    PRESS RELEASE: Los Alamos National Laboratory team of scientists prove carbon 14 dating of the Shroud of Turin wrong COLUMBUS, Ohio, August 15 — In his presentation today at The Ohio State University’s Blackwell Center, Los Alamos National Laboratory (LANL) chemist, Robert Villarreal, disclosed startling new findings proving that the sample of material used in 1988 to Carbon-14 (C-14) date the Shroud of Turin, which categorized the cloth as a medieval fake, could not have been from the original linen cloth because it was cotton. According to Villarreal, who lead the LANL team working on the project, thread samples they...
  • What about carbon dating? (Creation vs. Evolution)

    04/19/2005 10:12:06 AM PDT · by DaveLoneRanger · 220 replies · 3,402+ views
    Answers in Genesis ^ | Ken Ham, Jonathan Sarfati, and Carl Wieland
    What about carbon dating? By Ken Ham, Jonathan Sarfati, and Carl Wieland, Ed. Don Batten First published in The Revised and Expanded Answers Book Chapter 4How does the carbon “clock” work? Is it reliable? What does carbon dating really show? What about other radiometric dating methods? Is there evidence that the earth is young? Recommended Resources: The Revised and Expanded Answers BookWhy Won't They Listen?The Lie: EvolutionRefuting EvolutionRefuting Evolution 2 People who ask about carbon-14 (14C) dating usually want to know about the radiometric1 dating methods that are claimed to give millions and billions of years”carbon dating can only give...
  • Oldest Remains of Modern Humans Are Identified by Scientists

    02/16/2005 11:01:16 AM PST · by Alter Kaker · 553 replies · 5,870+ views
    New York Times (AP Wire) ^ | February 16, 2005 | AP Wire
    NEW YORK (AP) -- A new analysis of bones unearthed nearly 40 years ago in Ethiopia has pushed the fossil record of modern humans back to nearly 200,000 years ago -- perhaps close to the dawn of the species. Researchers determined that the specimens are around 195,000 years old. Previously, the oldest known fossils of Homo sapiens were Ethiopian skulls dated to about 160,000 years ago. Genetic studies estimate that Homo sapiens arose about 200,000 years ago, so the new research brings the fossil record more in line with that, said John Fleagle of Stony Brook University in New York,...
  • Carbon dating backs Bible on Edom

    02/17/2005 9:33:16 AM PST · by DaveLoneRanger · 19 replies · 1,027+ views
    South Bend Tribune ^ | February 17, 2005 | Richard N. Ostling
    The Mideast's latest archaeological sensation is all about Edom. The Bible says Edom's kings interacted with ancient Israel, but some scholars have confidently declared that no Edomite state could have existed that early. The latest archaeological work indicates the Bible got it right, those experts got it wrong and some write-ups need rewriting. The findings also could buttress disputed biblical reports about kings David and Solomon. Edom was a rugged land south and east of the Dead Sea in present-day southern Jordan. The Bible reports that Edom had kings before Israel (Genesis 36:31, 1 Chronicles 1:43) and that they barred...
  • A question for scientists

    11/11/2004 12:30:18 PM PST · by TChris · 25 replies · 479+ views
    Me | Me
    I have pondered at great length the recurring alarmism of environmental scientists as one shocking discovery after another have each, in their turn, posed planet-altering threats to humanity. I have also wondered at the rampant atheism of the scientific community as a whole. While each of these subjects is worthy of lengthy discussion, I have found what I believe is a common flaw in many of the methods of both, and other, camps. It seems that a common follow-up to the discovery of a phenomenon or development of a theory is an over-extrapolation of observable, solid facts. To wit: Observable...
  • Old Stones Reveal Their Age (New Dating Method: Quartz Hydration)

    04/15/2004 2:16:20 PM PDT · by blam · 25 replies · 456+ views ^ | 4-14-2004 | Amit Asaravala
    <p>A team of archaeological scientists in the United States and Germany say they have developed a technique to accurately determine the age of stone tools and artifacts between 50,000 and 100,000 years old, a period that has proved particularly tricky to map with other methods.</p>
  • Shroud of Turin experts say Gibson film sparks new interest in cloth

    04/07/2004 10:21:15 AM PDT · by presidio9 · 12 replies · 205+ views
    CNS ^ | 4/4/4
    COLORADO SPRINGS, Colo. (CNS) -- The wide publicity and controversy surrounding Mel Gibson's "The Passion of the Christ" have brought a spike of new interest in the Shroud of Turin, which many believe was Jesus' burial cloth. John P. and Rebecca S. Jackson, who run the Turin Shroud Center of Colorado in Colorado Springs, and Barrie Schwortz, who runs the interactive Web site, reported a significant increase in calls or visits since the movie came out. "This is normally a busy time of the year for us, but there's been about a 40 percent increase" in phone calls, said...
  • Pyrolysis/Mass Spectrometry show threads from Shroud of Turin Carbon-dating different

    01/21/2004 2:29:31 AM PST · by Swordmaker · 108 replies · 754+ views ^ | January 2004 | Ray N. Rogers,
    PYROLYSIS/MASS SPECTROMETRY APPLIED TO THE SHROUD OF TURIN Raymond N. Rogers Fellow University of California, Los Alamos National Laboratory Los Alamos, NM, USA ©2004 Raymond N. Rogers All Rights Reserved Our primary goal in undertaking pyrolysis-MS analyses on samples from the Shroud of Turin was the detection of impurities (e.g., painting materials). Most of the structural materials and probable impurities in Shroud samples were carbohydrates. We wanted to see traces of materia ls that were not carbohydrates. The samples were run at the Midwest Center for Mass Spectrometry (MCMS), University of Nebraska-Lincoln. This is a National Science Foundation "Center of...
  • Scientist: Oldest American skull found

    12/03/2002 10:09:59 AM PST · by CobaltBlue · 40 replies · 930+ views
    CNN ^ | December 3 2002 | Jeordan Legon
    <p>The "Peñon Woman III" skeleton was found near Mexico City International Airport.</p> <p>But perhaps more significant than the bones' age, researchers said, is that they were found while digging a well near Mexico City International Airport. Because the remains were discovered outside the United States, scientists will be able to study the DNA and structure of the skeleton without the objection of Native American groups, who can claim and rebury ancestral remains under a 1990 U.S. law.</p>