Rubidium-strontium
Full definition of rubidium-strontium
Noun
- (attributive) Designating a method of geological dating based on the relative amounts in rock of rubidium-87 and its beta-decay product, strontium-87.
- 1999, Jonathan I Lunine, Earth: Evolution of a Habitable World, p. 101:Isotopic dating of meteorites using the rubidium-strontium system and others indicates that the most primitive rocks in the solar system are 4.56 billion years old, determined rather precisely.