Synonyms
Definition
The chemical composition of the ocean corresponds to the relative composition of major ions (Na+, Mg2+, Ca2+, K+, Sr2+, Cl−, \( {\mathrm{SO}}_4^{2-} \), HCO3 −, Br−, \( {\mathrm{CO}}_3^{2-} \), B(OH)3, B(OH)4 −, F−) of seawater. The major ion content is considered relatively constant and defined as salinity, which is a measure of the total dissolved salts in seawater (Table 1). The chemical evolution of the ocean is the evolution of its chemistry (major ions, pH, and oxygen content) and the processes that controlled the composition of this terrestrial reservoir.
References and Further Reading
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Pinti, D.L. (2014). Ocean, Chemical Evolution of. In: Amils, R., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27833-4_1041-4
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Oceans, Chemical Evolution of- Published:
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DOI: https://doi.org/10.1007/978-3-642-27833-4_1041-5
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- 05 May 2015
DOI: https://doi.org/10.1007/978-3-642-27833-4_1041-4