UK’37 is unaffected by IODP repository conditions [Note]

Warren, Bridget, Cottee, Sarah and Badger, Marcus P.S. 2026. UK’37 is unaffected by IODP repository conditions [Note]. Organic Geochemistry 219 , 105228. 10.1016/j.orggeochem.2026.105228

Full text not available from this repository.

Abstract

The alkenone palaeothermometer is one of the principal methods by which past sea surface temperatures are reconstructed on Cenozoic timescales. Alkenone temperatures, produced from the UK’37 ratio of C37:2 and C37:3 alkenones, have been generated in hundreds of studies, many using ocean sediment recovered by projects such as the International Ocean Discovery Program (IODP) and its precursors. Large repositories of sediment drilled from 1969 to the present day are available for analysis, but as organic molecules, alkenones are potentially vulnerable to degradation, and the impact of time spent stored in IODP repositories is an unstudied source of alterations to the index. Here, we re-analyse UK’37 from DSDP 594 and ODP Site 982: cores that had previously produced high-resolution temperature records published 15 and 5 years ago. We show that the time spent in a repository had no effect on UK’37 outside of analytical uncertainty. We conclude that repository conditions do not affect UK’37, and alkenone palaeotemperatures generated from archived core material are likely to remain accurate.

Item Type:	Short Communication
Date Type:	Publication
Status:	Published
Schools:	Schools > Earth and Environmental Sciences
Publisher:	Elsevier
ISSN:	0146-6380
Date of Acceptance:	8 May 2026
Last Modified:	05 Aug 2026 14:38
URI:	https://orca.cardiff.ac.uk/id/eprint/187059

Actions (repository staff only)

Edit Item