Abstract
This is a critical review that: (i) provides an overview of LA-MC-ICP-MS dating techniques; (ii) highlights the benefits of using ICs and summarizes recent improvements in ultra-high spatial resolution dating; (iii) summarizes the range of minerals utilized for LA-MC-ICP-MS geochronology and LASS.
Highlights
Accurate U–Th–Pb geochronology of accessory minerals is critical for deciphering geological processes
In this article we provide an overview of laser ablation (LA)-MC-ICP-MS dating techniques with ion counter (IC) calibrations, and corrections for common lead, mass fractionation and matrix matching issues
The signi cant increase in the availability of inductively coupled plasma mass spectrometers with multiple Faraday collectors (MFCs) and/or multiple ion counters (MICs) has greatly improved research on stable and radiogenic isotopic systems in the past two decades
Summary
Measurement of isotopic compositions by LA-MC-ICP-MS (multi-collector) offers signi cant advantages over LA-SC-ICPMS (single collector) methods. For studies on complexly zoned minerals, small grains (
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