amino acid dating


amino acid dating

the dating of organic remains based on the observation of the degree of racemisation of amino acids which, in living organisms, are held in the laevo- position, but which, after death, slowly convert to the dextro- position.

Australian English dictionary. 2014.

Look at other dictionaries:

  • Amino acid dating — is a technique used to estimate age in a wide variety ofsituations. This technique relates changes in amino acid molecules to thetime elapsed since they were formed. This technique is used in paleobiology, archaeology, forensic science, and… …   Wikipedia

  • amino acid dating — amino acid dating, a method of dating dead organic matter by measuring the amount of change in the structure of the amino acids present after death: »When properly used, this dating method has important advantages over the radiocarbon… …   Useful english dictionary

  • amino-acid dating — /euh mee noh as id, am euh noh / a method used to date an organic geological or archaeological specimen, as a fossil or mummified body, by determining how much change has occurred in the amino acid structure of that specimen. [1970 75] * * * …   Universalium

  • amino-acid dating — /euh mee noh as id, am euh noh / a method used to date an organic geological or archaeological specimen, as a fossil or mummified body, by determining how much change has occurred in the amino acid structure of that specimen. [1970 75] …   Useful english dictionary

  • Amino acid — This article is about the class of chemicals. For the structures and properties of the standard proteinogenic amino acids, see Proteinogenic amino acid. The generic structure of an alpha amino acid in its unionized form …   Wikipedia

  • Dating methodologies in archaeology — Dating material drawn from the archaeological record can be made by a direct study of an artifact or may be deduced by association with materials found in the context the item is drawn from or inferred by its point of discovery in the sequence… …   Wikipedia

  • Dating methodology (archaeology) — Dating material drawn from the archaeological record can made by a direct study of an artifact or may be deduced by association with materials found in the context the item is drawn from or inferred by its point of discovery in the sequence… …   Wikipedia

  • Radiometric dating — (often called radioactive dating) is a technique used to date materials such as rocks, usually based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates.[1]… …   Wikipedia

  • Radiocarbon dating — (sometimes simply known as carbon dating) is a radiometric dating method that uses the naturally occurring radioisotope carbon 14 (14C) to estimate the age of carbon bearing materials up to about 58,000 to 62,000 years.[1] Raw, i.e. uncalibrated …   Wikipedia

  • Optical dating — is a method of determining how long ago minerals were last exposed to daylight. It is useful to geologists and archaeologists who want to know when such an event occurred. Alternate names sometimes used are optically stimulated luminescence… …   Wikipedia