Partial retention of radiogenic Pb in galena nanocrystals explains discordance in monazite from Napier Complex (Antarctica)

•Two steps of Pb⁎ mobility (1.05 Ga and 0.55 Ga) are recorded in monazite.•Partial loss of Pb⁎ and retention of the remaining Pb⁎ as nanocrystals explain microscale discordance.•The percentage of Pb⁎-loss shows an inverse correlation with the amount of Pb*-bearing nanocrystals.•The amount of Pb⁎-bea...

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Veröffentlicht in:	Earth and planetary science letters 2022-06, Vol.588, p.117567, Article 117567
Hauptverfasser:	Turuani, M.J., Laurent, A.T., Seydoux-Guillaume, A.-M., Fougerouse, D., Saxey, D., Reddy, S.M., Harley, S.L., Reynaud, S., Rickard, W.D.A.
Format:	Artikel
Sprache:	eng
Schlagworte:	atom probe tomography Earth Sciences Geochemistry monazite nanogeochronology Pb mobility Sciences of the Universe U–Th–Pb discordance
Online-Zugang:	Volltext
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