# rubidium-strontium dating

__noun__geological dating based on the proportions of radioactive rubidium into its decay product strontium; radioactive rubidium has a half-life of 47,000,000,000 years•__Hypernyms__: ↑dating, ↑geological dating* * *

/rooh bid"ee euhm stron"shee euhm, -sheuhm, -tee euhm/,*Geol.*a radiometric dating method whereby the ratio of rubidium isotope to strontium in a mineral is used to calculate the age of the mineral, based on the rate of radioactive decay of rubidium to strontium.[1965-70]* * *

**rubidˈium-stronˈtium dating**nounA method of determining the age of rocks that are more than 10 million years old by measuring the relative amounts of rubidium-87 and its beta decay product strontium-87• • •Main Entry: ↑rubidium

*Useful english dictionary.
2012.*

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**Rubidium-strontium dating**— The rubidium strontium dating method is a radiometric dating technique that geologists use to determine the age of rocks.Development of this process was aided by Fritz Strassmann, who later moved onto discovering nuclear fission with Otto Hahn… … Wikipedia**rubidium-strontium dating**— /rooh bid ee euhm stron shee euhm, sheuhm, tee euhm/, Geol. a radiometric dating method whereby the ratio of rubidium isotope to strontium in a mineral is used to calculate the age of the mineral, based on the rate of radioactive decay of… … Universalium**rubidium - strontium dating**— … Useful english dictionary**dating**— I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or … Universalium**Rubidium**— krypton ← rubidium → strontium K ↑ Rb ↓ … Wikipedia**dating**— noun use of chemical analysis to estimate the age of geological specimens • Syn: ↑geological dating • Derivationally related forms: ↑date • Hypernyms: ↑chemical analysis, ↑qualitative analysis • … Useful english dictionary**Isotopes of rubidium**— Rubidium (Rb) has 24 isotopes, with naturally occurring rubidium being composed of just two isotopes; Rb 85 (72.2%) and the radioactive Rb 87 (27.8%). Normal mixes of rubidium are radioactive enough to fog photographic film in approximately 30 to … 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**geological dating**— noun use of chemical analysis to estimate the age of geological specimens • Syn: ↑dating • Derivationally related forms: ↑date (for: ↑dating) • Hypernyms: ↑chemical analysis, ↑ … Useful english dictionary**Isochron dating**— is a common technique of radiometric dating and is applied to date certain events, such as crystallization, metamorphism, shock events, and differentiation of precursor melts, in the history of rocks. Isochron dating can be further separated into … Wikipedia