Laser ablation ICP—MS — a new dating tool in Earth science

Laser ablation inductively coupled plasma mass spectrometry (LA ICP—MS) is a newly established technique that is capable of in-situ U(Th)—Pb dating of accessory minerals in a wide range of rock types and geological environments. Recent developments in laser technology and mass spectrometry have led to substantial improvements in precision and accuracy of isotopic ages obtained by LA ICP-MS. Despite the advancements in technology, the precision and accuracy of U(Th)—Pb laser ablation ICP-MS dating are still limited by laser-induced elemental fractionation of Pb and U. This paper reviews the techniqueʹs history and summarizes recent achievements and possible future developments of this novel dating method.