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Reviews and syntheses: Best practices for the application of marine GDGTs as proxy for paleotemperatures: sampling, processing, analyses, interpretation, and archiving protocols
Bijl, P.K.; Śliwińska, K.K.; Duncan, B.; Huguet, A.; Naeher, S.; Rattanasriampaipong, R.; Sosa-Montes de Oca, C.; Auderset, A.; Berke, M.A.; Kim, B.S.; Davtian, N.; Dunkley Jones, T.; Eefting, D.D.; Elling, F.J.; Fenies, P.; Inglis, G.N.; O'Connor, L.; Pancost, R.D.; Peterse, F.; Rice, A.; Sluijs, A.; Varma, D.; Xiao, W.; Zhang, Y.G. (2025). Reviews and syntheses: Best practices for the application of marine GDGTs as proxy for paleotemperatures: sampling, processing, analyses, interpretation, and archiving protocols. Biogeosciences 22(21): 6465-6508. https://dx.doi.org/10.5194/bg-22-6465-2025
In: Gattuso, J.P.; Kesselmeier, J. (Ed.) Biogeosciences. Copernicus Publications: Göttingen. ISSN 1726-4170; e-ISSN 1726-4189
Peer reviewed article  
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  • Varma, D.
Abstract
    Marine glycerol dialkyl glycerol tetraethers (GDGTs) are used in various proxies (such as TEX86) to reconstruct past ocean temperatures. Over 20 years of improvements in GDGT sample processing, analytical techniques, data interpretation and our understanding of proxy functioning have led to the collective development of a set of best practices in all these areas. Further, the importance of Open Science in research has increased the emphasis on the systematic documentation of data generation, reporting and archiving processes for optimal reusability of data. In this paper, we provide protocols and best practices for obtaining, interpreting and presenting GDGT data (with a focus on marine GDGTs), from sampling to data archiving. The purpose of this paper is to optimize inter-laboratory comparability of GDGT data, and to ensure published data follows modern open access principles.
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