Metal stable isotopes in the marine realm
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Date
2025
Publication Type
Encyclopedia Entry
ETH Bibliography
yes
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Abstract
The field of marine metal stable isotope geochemistry has expanded dramatically since the last edition of the Treatise on Geochemistry. This chapter examines the marine stable isotope cycling of nine transition metals: V, Cr, Fe, Ni, Cu, Zn, Mo, Cd and W. Classifying the metals according to their oceanic residence time and degree of internal cycling enables comparison between systems and, in each case, to draw out the importance of one or more key controlling processes. Isotopic variability internal to the ocean is driven by a range of biogeochemical processes and their interaction with the physical ocean circulation. Mean whole ocean isotopic compositions are controlled by the isotopic composition of oceanic sources and fractionation into sedimentary sinks. The isotopic oceanic mass balance of each metal is reviewed and, in some cases, updated, providing revised estimates of their oceanic residence times.
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Publication status
published
Book title
Treatise on Geochemistry
Journal / series
Volume
4
Pages / Article No.
285 - 332
Publisher
Elsevier
Event
Edition / version
3rd ed.
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Software
Geographic location
Date collected
Date created
Subject
Biological cycling; Chemical speciation; Fractionation factor; GEOTRACES; Metal isotope; Ocean circulation; Oceanic mass balance; Oceanic sources; Residence time; Sedimentary sinks; Stable isotope fractionation; Transition metal
Organisational unit
03956 - Vance, Derek / Vance, Derek