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Consequences of shoaling of the Central American Seaway determined from modeling Nd isotopes

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dc.contributor.author Sepulchre, P. en
dc.contributor.author Arsouze, T. en
dc.contributor.author Donnadieu, Y. en
dc.contributor.author Dutay, J. -C en
dc.contributor.author Jaramillo, C. en
dc.contributor.author Le Bras, J. en
dc.contributor.author Martin, E. en
dc.contributor.author Montes, C. en
dc.contributor.author Waite, A. J. en
dc.date.accessioned 2015-02-25T18:30:17Z
dc.date.available 2015-02-25T18:30:17Z
dc.date.issued 2014
dc.identifier.citation Sepulchre, P., Arsouze, T., Donnadieu, Y., Dutay, J. -C, Jaramillo, C., Le Bras, J., Martin, E., Montes, C., and Waite, A. J. 2014. "<a href="https://stri-apps.si.edu/docs/publications/pdfs/STRI-W_Sepulchre_2014_Paleoceano_Panama.pdf">Consequences of shoaling of the Central American Seaway determined from modeling Nd isotopes</a>." <em>Paleoceanography</em>. 29 (3):176&ndash;189. <a href="https://doi.org/10.1002/2013PA002501">https://doi.org/10.1002/2013PA002501</a> en
dc.identifier.issn 0883-8305
dc.identifier.uri http://hdl.handle.net/10088/24511
dc.description.abstract The Central American Seaway played a pivotal role in shaping global climate throughout the late Cenozoic. Recent geological surveys have provided new constraints on timing of the seaway shoaling, while neodymium isotopic (eNd) data measured on fossil teeth, debris, and ferromanganese crusts have helped define the history of water masses in the region. Here we provide the first 3-D simulations of eNd responses to the shoaling seaway. Our model suggests that a narrow and shallow seaway is sufficient to affect interoceanic circulation, that inflow/outflow balance between the Caribbean and the Antilles responds nonlinearly to sill depth, and that a seaway narrower than 400 km is consistent with an active Atlantic meridional overturning circulation during the late Miocene. Simulated eNd values in the Caribbean confirm that inputs from radiogenic Pacific waters in the Caribbean decrease as the seaway shoals. Despite model limitations, a comparison between our results and eNd values recorded in the Caribbean helps constrain the depth of the Central American Seaway through time, and we infer that a depth between 50 and 200 m could have been reached 10 Ma ago. en
dc.relation.ispartof Paleoceanography en
dc.title Consequences of shoaling of the Central American Seaway determined from modeling Nd isotopes en
dc.type Journal Article en
dc.identifier.srbnumber 119166
dc.identifier.doi 10.1002/2013PA002501
rft.jtitle Paleoceanography
rft.volume 29
rft.issue 3
rft.spage 176
rft.epage 189
dc.description.SIUnit STRI en
dc.citation.spage 176
dc.citation.epage 189
dc.relation.url https://stri-apps.si.edu/docs/publications/pdfs/STRI-W_Sepulchre_2014_Paleoceano_Panama.pdf

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