Alkalinity and Elemental Cycles in Present and Past Ocean: Insight from Geochemical Modeling 1 and Alkali and Alkaline Earth Metal Isotopes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F25%3A106355" target="_blank" >RIV/60460709:41330/25:106355 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/chapter/referencework/abs/pii/B9780323997621000371?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/chapter/referencework/abs/pii/B9780323997621000371?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/B978-0-323-99762-1.00037-1" target="_blank" >10.1016/B978-0-323-99762-1.00037-1</a>
Alternative languages
Result language
angličtina
Original language name
Alkalinity and Elemental Cycles in Present and Past Ocean: Insight from Geochemical Modeling 1 and Alkali and Alkaline Earth Metal Isotopes
Original language description
This chapter provides an overview of near-surface geochemical processes operating on Earth, with special emphasis placed on (i) marine weathering such as alteration and dissolution of silicates, carbonates and terrigenous riverine particles in the ocean, complemented by (ii) reverse weathering reactions leading to marine authigenic clay formation, and the impact of these phenomena on ocean alkalinity budget and the chemical and isotope composition of seawater. Model simulations of the above processes provide estimates of the global marine fluxes of cation (Na+, K+, Mg2+, Ca2+), alkalinity, and dissolved silica (Si) into the ocean induced by silicate weathering and dissolution of terrigenous material in seawater. Additional constraints on silicate vs. carbonate weathering, oceanic/coastal CaCO3 cycling, and paleo-seawater reconstructions are provided via the isotope systems of alkali and alkaline earth metals (?88/86Sr, ?44/40Ca, ?26Mg, ?7Li), and emerging proxies such as ?41K, that are discussed within the context of marine weathering in the present and past ocean.
Czech name
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Czech description
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Classification
Type
C - Chapter in a specialist book
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
Treatise on Geochemistry
ISBN
978-0-323-99763-8
Number of pages of the result
54
Pages from-to
33-87
Number of pages of the book
55
Publisher name
Elsevier Science
Place of publication
Německo
UT code for WoS chapter
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