doi.org/10.1016/j.gca.2007.11.012
Original paper

Natural fractionation of 238U/235U

..., Edward A. Boyle
84
Geochimica et Cosmochimica Acta4.50
Volume: 72, Issue: 2, Pages: 345 - 359
Published: Jan 1, 2008
Abstract
The isotopic composition of U in nature is generally assumed to be invariant. Here, we report variations of the 238U/235U isotope ratio in natural samples (basalts, granites, seawater, corals, black shales, suboxic sediments, ferromanganese crusts/nodules and BIFs) of ∼1.3‰, exceeding by far the analytical precision of our method (≈0.06‰, 2SD). U isotopes were analyzed with MC-ICP-MS using a mixed 236U–233U isotopic tracer (double spike) to...
Paper Fields
Paper Details
Title
Natural fractionation of 238U/235U
DOI
doi.org/10.1016/j.gca.2007.11.012
Published Date
Jan 1, 2008
Journal
Geochimica et Cosmochimica Acta
Volume
72
Issue
2
Pages
345 - 359
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