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The bromine and chlorine isotope composition of primary halite deposits and their significance for the secular isotope composition of seawater

Eggenkamp, H.G.M; Louvat, P.; Agrinier, P.; Bonifacie, M.; Bekker, Andrey; Krupenik, V.; Griffioen, J.; Horita, J.; Brocks, Jochen; Bagheri, R.

Description

We determined the chlorine and bromine isotope compositions of 83 halite samples from nine different geological periods between the Orosirian and the present in order to study the secular Cl and Br isotope variations in the ocean during the last 2 billion years. Relatively large Cl (-0.24 to +0.51‰ vs. SMOC) and Br (-0.24 to +1.08‰ vs. SMOB) isotope variations are found in these halite samples. Two different methods, one in which the isotope fractionation between the brine and the salt...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
URI: http://hdl.handle.net/1885/205396
Source: Geochimica et Cosmochimica Acta
DOI: 10.1016/j.gca.2019.08.005

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