Improvements in 230Th dating, 230Th and 234U half-life values, and U–Th isotopic measurements by multi-collector inductively coupled plasma mass spectrometry

By Hai-Ou Cheng, R. Edwards, Chuan‐Chou Shen, V. Polyak, Y. Asmerom, J. Woodhead, J. Hellstrom, Yongjin Wang, X. Kong, C. Spötl and 2 more. 2013

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Selection and Treatment of Data for Radiocarbon Calibration: An Update to the International Calibration (IntCal) Criteria (2013, background): “New estimates have recently been published by Cheng et al. (2013) with reduced uncertainties and it is likely that there will be amendments in the future.”
Evaluating uncertainties in the calibration of isotopic reference materials and multi-element isotopic tracers (EARTHTIME Tracer Calibration Part II) (2015, methodology): “…constant data (Jaﬀey et al., 1971) legitimizes further eﬀorts at inter-calibrating the U decay constants (e.g. Schoene et al., 2006; Mattinson, 2010; Cheng et al., 2013) as well as the U–Pb system with other radio-isotopic dating systems through the analyses of assumed coeval geological…”
U–Th–Pb zircon geochronology by ID-TIMS, SIMS, and laser ablation ICP-MS: Recipes, interpretations, and opportunities (2015, background): “Magmatic 690 processes do not fractionate 234 U (t½ = 245,620 years; Cheng et al., 2013) from its parent, but 691 23 recoil ejection and leaching can lead to 234 U loss and a resulting deficit in 206 Pb in radiation 692 damaged minerals (e.g., Romer, 2003; Cheng et al., 2013).”