M. Dellinger
The Li isotope composition of marine biogenic carbonates: Patterns and mechanisms
Dellinger, M.; West, J.; Paris, G.; Adkins, J.F.; Pogge von Strandmann, P.; Ullmann, C.V.; Eagle, R.A.; Freitas, P.; Bagard, M.; Ries, J.B.; Corsetti, F.A.; Perez-Huerta, A.; Kampf, A.R.
Authors
J. West
G. Paris
J.F. Adkins
P. Pogge von Strandmann
C.V. Ullmann
R.A. Eagle
P. Freitas
M. Bagard
J.B. Ries
F.A. Corsetti
A. Perez-Huerta
A.R. Kampf
Abstract
Little is known about the fractionation of Li isotopes during formation of biogenic carbonates, which form the most promising geological archives of past seawater composition. Here we investigated the Li isotope composition (δ7Li) and Li/Ca ratios of organisms that are abundant in the Phanerozoic record: mollusks (mostly bivalves), echinoderms, and brachiopods. The measured samples include (i) modern calcite and aragonite shells from various species and natural environments (13 mollusk samples, 5 brachiopods and 3 echinoderms), and (ii) shells from mollusks grown under controlled conditions at various temperatures. When possible, the mollusk shell ultrastructure was micro-sampled in order to assess intra-shell heterogeneity. In this paper, we systematically characterize the influence of mineralogy, temperature, and biological processes on the δ7Li and Li/Ca of these shells and compare with published data for other taxa (foraminifera and corals).
Citation
Dellinger, M., West, J., Paris, G., Adkins, J., Pogge von Strandmann, P., Ullmann, C., …Kampf, A. (2018). The Li isotope composition of marine biogenic carbonates: Patterns and mechanisms. Geochimica et Cosmochimica Acta, 236, 315-335. https://doi.org/10.1016/j.gca.2018.03.014
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 10, 2018 |
Online Publication Date | Mar 17, 2018 |
Publication Date | Sep 1, 2018 |
Deposit Date | Aug 9, 2018 |
Publicly Available Date | Mar 29, 2024 |
Journal | Geochimica et Cosmochimica Acta |
Print ISSN | 0016-7037 |
Publisher | Meteoritical Society |
Peer Reviewed | Peer Reviewed |
Volume | 236 |
Pages | 315-335 |
DOI | https://doi.org/10.1016/j.gca.2018.03.014 |
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http://creativecommons.org/licenses/by-nc-nd/4.0/
Copyright Statement
© 2018 This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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