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Evaluating Mg/Ca in belemnite calcite as a palaeo-proxy

Li, Q; McArthur, JM; Doyle, P; Janssen, N; Leng, MJ; Mueller, W; Reboulet, S; (2013) Evaluating Mg/Ca in belemnite calcite as a palaeo-proxy. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY , 388 98 - 108. 10.1016/j.palaeo.2013.07.030. Green open access

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Abstract

The Mg/Ca, Sr/Ca, δ18O and δ13C compositions are given for well-preserved specimens of ten belemnite species/genera from three stratigraphic intervals. The data help assess the use of these proxies for palaeo-oceanography. Samples are from Dorset, UK (Pliensbachian; 5 species); Cambridgeshire, UK (Callovian; 1 species); and the Vocontian Basin, SE France (Valanginian; 4 genera). In none of these belemnite populations (at species or genera level) does Mg/Ca correlate with δ18O. Neither do values of δ18O correlate with Mg/Ca along a microsampled radial profile across a single specimen of Cylindroteuthis puzosiana (Callovian). The use of Mg/Ca is therefore considered to be unreliable as a palaeo-temperature indicator for these belemnite species and genera.

Type: Article
Title: Evaluating Mg/Ca in belemnite calcite as a palaeo-proxy
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.palaeo.2013.07.030
Publisher version: http://dx.doi.org/10.1016/j.palaeo.2013.07.030
Additional information: © 2013 Elsevier B.V. Open access under CC BY license.
Keywords: Belemnite, delta O-18, Mg/Ca, Sr/Ca, Palaeo-proxies, Palaeo-temperature
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1415939
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