Interpretation of monazite ages obtained via in situ analysis
Monazite grains from Nepal and Vietnam were compositionally analyzed with an electron microprobe and dated (Th-Pb) with an ion microprobe. Five sources of uncertainty explain age distributions from single samples that appear inconsistent with a single population: (1) Pb loss due to diffusion, (2) dissolution/reprecipitation reactions along a retrograde path, (3) analytical uncertainties, (4) analyses of overlapping age domains, and (5) episodic monazite growth. The influence of these factors is...[Show more]
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