Cited by 216Paleontology and Stratigraphy of FossilsGeology and Paleoclimatology ResearchGeochemistry and Elemental Analysis

Uranium concentrations and 238U/235U isotope ratios in modern carbonates from the Bahamas: Assessing a novel paleoredox proxy

Romaniello, Stephen J., Herrmann, Achim D., Anbar, Ariel D.·2013·Chemical Geology

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Crossref · 10.1016/j.chemgeo.2013.10.002

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81 of 81 references verified0 citation errors · 0 not checkable

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  • In modern Bahamas bank sediments, uranium reduction near the sediment-water interface allows nonquantitative U removal that leaves bulk sediments on average +0.24 ± 0.14‰ (1 SD) heavier than overlying seawater.

    “In modern Bahamas bank sediments, uranium reduction occurs near the sediment–water interface allowing for nonquantitative U removal that leaves the bulk sediments on average +0.24 ± 0.14‰ (1 SD) heavier than overlying seawater (29–31).”
  • The offset in δ238U between altered and least altered samples is within the range occurring during syndepositional or very early diagenesis on the modern Bahamas banktop, suggesting the least altered samples are on average ∼0.1‰ closer to contemporaneous seawater than modern carbonates are to modern seawater.

    “This offset is within the range occurring during syndepositional or very early diagenesis on the modern Bahamas banktop (+0.24 ± 0.14‰, 1 SD), suggesting the least altered samples are, on average, ∼0.1‰ closer to contemporaneous seawater than modern carbonates are to modern seawater (29, 31, 36).”

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Authors
Romaniello, S. J., Herrmann, A. D., & Anbar, A. D.
Affiliations
  • Arizona State University (US)
  • Louisiana State University (US)
Corresponding author
Romaniello, Stephen J.
Venue
Chemical Geology
Publisher
Elsevier BV
Published
2013-12
Volume
362
Pages
305-316
ISSN
0009-2541 (ISSN-L)
OpenAlex
W1987792566
Cited by
212
References
85
Citations by year
2026: 14 · 2025: 19 · 2024: 11 · 2023: 24 · 2022: 17 · 2021: 24 · 2020: 18 · 2019: 17 · 2018: 24 · 2017: 10 · 2016: 16 · 2015: 10 · 2014: 8
FWCI
8.61
Type
journal article
Language
en
Open access
closed
Locations
  • Chemical Geology (publishedVersion)
  • Civil War Book Review (submittedVersion)
Funders
National Science Foundation (OCE-0952394)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
Keywords
uranium isotopes, 235U/238U ratio, paleoredox proxies, carbonate sediments, early diagenesis, authigenic uranium, hydrogen sulfide, organic matter, dolomitization, 234U/238U

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