000156612 001__ 156612
000156612 005__ 20251017144634.0
000156612 0247_ $$2doi$$a10.1130/G52974.1
000156612 0248_ $$2sideral$$a143833
000156612 037__ $$aART-2025-143833
000156612 041__ $$aeng
000156612 100__ $$aPeñalver-Clavel, I.$$uUniversidad de Zaragoza
000156612 245__ $$aIntensified bottom water formation in the southwest Pacific during the early Eocene greenhouse—Insights from neodymium isotopes
000156612 260__ $$c2025
000156612 5060_ $$aAccess copy available to the general public$$fUnrestricted
000156612 5203_ $$aThe Early Eocene Climatic Optimum (EECO; 53−49 Ma), when Earth experienced peak Cenozoic surface temperatures, provides a test case for how ocean circulation might operate under enhanced greenhouse climate conditions. The topic lies at the forefront of current geoscience, but evolution of ocean circulation during this climatic extreme remains unresolved, critically at high southern latitudes. We present the first highly resolved record of neodymium isotope values at high southern latitudes (International Ocean Discovery Program Site U1510), a proxy that tracks ocean bottom water. A prominent negative shift in seawater εNd(t) in the Tasman Sea in the middle of the EECO was likely driven by a new bottom water mass, with the Antarctic sector of the Pacific Ocean being the obvious source. Comparison with low-resolution studies from other sites in the Tasman Sea suggests that a new intermediate water source flowed farther away from the Tasman Sea and into the Pacific during the EECO. Intensification of dense water formation at high southern latitudes during peak greenhouse warmth is surprising but consistent with recent findings that highlight the complexity of global thermohaline circulation.
000156612 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/PID2023-149894OB-I00$$9info:eu-repo/grantAgreement/ES/MICINN PRE2020-092638
000156612 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000156612 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000156612 700__ $$aBatenburg, S.J.
000156612 700__ $$aSutherland, R.
000156612 700__ $$aDallanave, E.
000156612 700__ $$aDickens, G.R.
000156612 700__ $$aWesterhold, T.
000156612 700__ $$aAgnini, C.
000156612 700__ $$aAlegret, L.
000156612 7102_ $$12000$$2655$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Paleontología
000156612 773__ $$g20, 20 (2025), 5 pp.$$pGeology$$tGeology$$x0091-7613
000156612 8564_ $$s1121672$$uhttps://zaguan.unizar.es/record/156612/files/texto_completo.pdf$$yVersión publicada
000156612 8564_ $$s3396407$$uhttps://zaguan.unizar.es/record/156612/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000156612 909CO $$ooai:zaguan.unizar.es:156612$$particulos$$pdriver
000156612 951__ $$a2025-10-17-14:28:05
000156612 980__ $$aARTICLE