Compound specific radiocarbon dating

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The Center for Applied Isotope Studies offers consultation and full radiocarbon dating services for research and commercial clients. We use the latest techniques and technologies. Our state-of-the-art Pretreatment and Graphitization Facility allows us to offer many specialty services, including micro-sampling and compound-specific dating. We are experts in dating extremely small and poorly preserved samples. The Center for Applied Isotope Studies is and always has been a tracer-free facility: we do not accept, handle, graphitize or count samples containing Tracer or Labeled Hot 14 C due to the risk of cross-contamination.
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Accurate compound-specific 14 C dating of archaeological pottery vessels

Neanderthal remains discovered in a cave in Belgium thought to be 37, years old are actually thousands of years older than previous studies suggested, study shows. University of Oxford archaeologists re-dated a number of Neanderthal specimens from Spy Cave in Belgium, a renowned site for palaeolithic discoveries and found contamination skewed earlier dating efforts. The team say some bones previously dated at about 37, years old from within the cave may be up to 5, years older. Determining that the bones were older than suspected allowed the researchers to confirm that Neanderthals disappeared from northwest Europe between 44, and 40, years ago - up to 8, years later than previous estimates.
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Why the Neanderthal vanished earlier than we thought

Sixty years ago, scientists demonstrated that cosmic rays react with nitrogen 14N in the atmosphere, substituting a neutron for a proton to produce 14C Libby, ; Libby et al. Soon it was discovered that 14C is radioactive and that this isotope of carbon—better known as radiocarbon—would be useful as a clock for determining the age of materials on Earth see Box 1. In particular, 14C dating of the organic remains of living organisms has been an indispensable tool for archaeologists, paleontologists, historians, and geochemists, whose work fundamentally depends on determining when in the past an organism or whole ecosystem was alive. Ingalls, A. Ten years of compound-specific radiocarbon analysis.
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