Parent–daughter ratio: The ratio of rubidium (Rb) to strontium (Sr). The ratio is commonly expressed as 87Rb/86Sr, where the unstable Rb-87 isotope is referred to as the parent nuclide, being approximately 27 % of all rubidium. The daughter nuclide (Sr-87) is represented by Sr-86, which is stable and not subject to radiogenic ingrowth and constitutes approximately 9.9 % of all strontium.
|Title of host publication||Encyclopedia of Scientific Dating Methods|
|Editors||W Jack Rink, Jeroen W Thompson, Larry M Heaman, A J Timothy Jull, James B Paces|
|Place of Publication||Dordrecht Netherlands|
|Number of pages||13|
|Publication status||Published - 18 Jun 2015|
|Name||Encyclopedia of Earth Sciences Series|