Noun
Rb-Sr (uncountable)
rubidium-strontium.
A Rb-Sr date which is at variance with other geochronometers may not be useless, it may be providing data on an event which is not representing the age of formation of the rock. Source: Internet
A radiometric age for the Cretaceous-Tertiary boundary based on K-Ar, Rb-Sr, and U-Pb ages of bentonites from Alberta, Saskatchewan, and Montana. Source: Internet
Rb-Sr can then be used on the altered mineralogy to date the time of this alteration, but not the date at which the rock formed. Source: Internet
Several preconditions must be satisfied before a Rb-Sr date can be considered as representing the time of emplacement or formation of a rock. Source: Internet
Sources of error Rb-Sr dating relies on correctly measuring the Rb-Sr ratio of a mineral or whole rock sample, plus deriving an accurate 87 Sr/ 86 Sr ratio for the mineral or whole rock sample. Source: Internet