Improving U Th Pb Electron Microprobe mineral dating

martes, febrero 12, 2019

A recent article in Chemical Geology reports on a new analytical approach improving U-Th-Pb electron microprobe dating.
The corresponding author, Patrik Konečný, is a long time user of CAMECA SX EPMA. Leading the Electron Microprobe Laboratory at the State Geological Institute of Dionýz Štúr in Bratislava, he has been involved in the development of innovative dating methods for monazite, uraninite, thorite and xenotime since 2014.
The new approach, involving "monazite age reference correction" (MARC), utilizes a set of well-defined and approved microprobe monazite age reference materials for improvement of reliability in EPMA geochronology.

Link to the article on Science Direct:
Improving U-Th-Pb electron microprobe dating using monazite age references.


More information on research conducted by Patrik Konečný at the State Geological Institute

Shown above: Th, Ce, Y and U distribution in F5 monazite age reference material (X-ray mapping). F5 although strongly zoned in terms of Th (about 30 wt. % in the core vs 6-8 wt. % in the rim) provides identical ages in chemically different domains