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Updated: Nov 21, 2025

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides
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Recent developments in using the molecular decay dating method: a review.

Johannes Tintner1

  • 1Department of Material Sciences and Process Engineering, Institute of Physics and Materials Science, University of Natural Resources and Life Sciences, Vienna, Vienna, Austria.

Annals of the New York Academy of Sciences
|January 14, 2021
PubMed
Summary

Molecular decay (MD) patterns offer a new method for dating organic materials, overcoming limitations of radiocarbon dating and dendrochronology. This approach analyzes molecular changes to determine age, unlocking information from previously undatable samples.

Keywords:
FTIR spectroscopyarchaeometryorganic mattertaphonomy

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Area of Science:

  • Material Science
  • Analytical Chemistry
  • Archaeometry

Background:

  • Accurate dating of organic materials is crucial across various scientific disciplines.
  • Current methods like radiocarbon dating and dendrochronology have inherent limitations, leaving many samples undatable.
  • Molecular changes in materials over time offer potential as intrinsic age indicators.

Observation:

  • Many organic materials exhibit intrinsically monotonous molecular decay (MD) patterns.
  • These MD patterns function as molecular clocks, initiated at the time of molecule formation.
  • Factors such as material composition and preservation conditions influence the rate of molecular decay.

Findings:

  • Prediction models for dating wood, paper, and parchment using infrared spectroscopy have been developed based on MD patterns.
  • MD dating is a diverse strategy, not a single methodology, with varying precision among different molecular clocks.
  • The speed of molecular clocks can be altered by preservation conditions, necessitating specific prediction models.

Implications:

  • Monotonous molecular decay dating presents a novel strategy to complement or replace existing dating techniques.
  • This method has the potential to reveal significant information from organic findings previously inaccessible to dating.
  • Further development of MD dating methodologies could expand the scope of historical and scientific research.