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Interpretation of monazite ages obtained via in situ analysis

Catlos, Elizabeth; Gilley, Lisa; Harrison, Timothy

Description

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]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
URI: http://hdl.handle.net/1885/92159
Source: Chemical Geology
DOI: 10.1016/S0009-2541(02)00099-2

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