English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/211729
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


A revised seawater sulfate S-isotope curve for the Eocene

AuthorsYao, Weiqi; Paytan, Adina; Griffith, Elizabeth M.; Martínez-Ruiz, Francisca; Markovic, Stefan; Wortmann, Ulrich G.
Sulfur isotope
Marine diagenesis
Issue Date20-Jan-2020
PublisherElsevier BV
CitationChemical Geology 532: 119382 (2020)
AbstractThe sulfur isotope ratio (δS) recorded in marine barite is commonly used to estimate secular changes in the sulfur isotopic composition of seawater sulfate (δS) throughout Earth's history. The Cenozoic record demonstrates a drastic 5‰ increase in seawater δS during the Early Eocene. However, the gradient of this excursion is based on only a few data points. Taking advantage of a much improved biostratigraphic framework, we redefine the Eocene δS data with a new high-resolution barite based δS record between 60 and 30 Ma. Our results show that the rise of δS starts about 3 million years later (~53 Ma) and lasts about 9 million years longer (until 38 Ma) than previously depicted. As such, the gradient of the δS curve is ~0.4‰/Myr. The radiogenic strontium isotopic ratio in barite suggests that some of the samples used for the original barite record are affected by diagenetic alteration.
Publisher version (URL)http://dx.doi.org/10.1016/j.chemgeo.2019.119382
Identifiersdoi: 10.1016/j.chemgeo.2019.119382
issn: 0009-2541
Appears in Collections:(IACT) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf14,53 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.