tritium dating

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• Tritium — Infobox isotope background = #ffcccc text color = isotope name = Hydrogen 3 alternate names = tritium, triton mass number = 3 symbol = H num neutrons = 2 num protons = 1 abundance = trace halflife = 4500±8 days decay mode1 = Beta emission decay… …   Wikipedia

• tritium —    A short lived isotope of hydrogen (8 = 12.43 y) that is directly incorporated into the water molecule as 1H3HO or 1HTO [24]. Commonly used for tracing ground water and for age dating of ground water [16].    See also radioisotope; radioactive… …   Lexicon of Cave and Karst Terminology

• 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

• hydrogen — /huy dreuh jeuhn/, n. a colorless, odorless, flammable gas that combines chemically with oxygen to form water: the lightest of the known elements. Symbol: H; at. wt.: 1.00797; at. no.: 1; density: 0.0899 g/l at 0°C and 760 mm pressure. [1785 95;… …   Universalium

• Environmental radioactivity — is produced by radioactive materials in the human environment. While some radioisotopes, such as strontium 90 (90Sr) and technetium 99 (99Tc), are only found on Earth as a result of human activity, and some, like potassium 40 (40K), are only… …   Wikipedia

• Isotope geochemistry — is an aspect of geology based upon study of the relative and absolute concentrations of the elements and their isotopes in the Earth. Broadly, the field is divided into two branches: stable and radiogenic isotope geochemistry.Lead lead isotope… …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• Fusion power — The Sun is a natural fusion reactor. Fusion power is the power generated by nuclear fusion processes. In fusion reactions two light atomic nuclei fuse together to form a heavier nucleus (in contrast with fission power). In doing so they release a …   Wikipedia

• Datation des eaux souterraines — Au sein des aquifères, l’âge des eaux souterraines, c est à dire de son temps de transfert de son point d’infiltration vers son exutoire naturel ou non (captage) peut varier du jour au(x) million(s) d’années suivant le contexte géologique et… …   Wikipédia en Français

• Accelerator mass spectrometry — Infobox chemical analysis name = Accelerator mass spectrometry caption =Accelerator mass spectrometer at Lawrence Livermore National Laboratory acronym = AMS classification =Mass spectrometry analytes = Organic molecules Biomolecules… …   Wikipedia

• Libby, Willard Frank — ▪ American chemist born Dec. 17, 1908, Grand Valley, Colo., U.S. died Sept. 8, 1980, Los Angeles, Calif.       American chemist whose technique of carbon 14 (or radiocarbon) dating (carbon 14 dating) provided an extremely valuable tool for… …   Universalium