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Boric acid and borate incorporation in inorganic calcite inferred from B/Ca, boron isotopes and surface kinetic modeling

Farmer, Jesse R.; Branson, Oscar; Uchikawa, Joji; Penman, Donald E.; Honisch, Barbel; Zeebe, Richard E.


The boron concentration (B/Ca ratio) and isotopic composition (δ11B) of biogenic calcite are widely applied to reconstruct past changes in seawater carbonate chemistry. Knowledge of B incorporation pathways into calcite is critical for these applications and for improving the theoretical basis of B proxies. While the canonical interpretation of δ11B holds that B in calcite predominantly derives from dissolved borate anion in seawater, recent studies of the B content, coordination, and isotopic...[Show more]

CollectionsANU Research Publications
Date published: 2019-10-16
Type: Journal article
Source: Geochimica et Cosmochimica Acta
DOI: 10.1016/j.gca.2018.10.008


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