Biblioteca de la Universidad Complutense de Madrid

Further evidence for a relatively high sea level during the penultimate interglacial: open-system U-series ages from La Marina (Alicante, East Spain)

Impacto



Goy Goy, José Luis y Hillaire-Marcel, Claude y Zazo Cardeña , Caridad y G., Bassam y Dabrio, Cristino J. y González Ureña, Ángel y Bardají Azcárate, Teresa y Civis Llovera, Jorge y Preda, Michael y Yébenes, A. y Forte, Alessandro M. (2006) Further evidence for a relatively high sea level during the penultimate interglacial: open-system U-series ages from La Marina (Alicante, East Spain). Geodinamica acta, 19 (6). pp. 409-426. ISSN 0985-3111

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Resumen

The elevation and timing of high sea stands during Oxygen Isotope Stage (OIS) 7 are not as well constraíned as those of OIS 5e.
Conflictíng values are reported from Medíterranean coastlines, and fossil dating is inaccurate because of ubiquitous open U-series
systems. New morphostratigraphic data from La Marina (eastem Spain) supported by open-system U-series coral ages shed light on
the maximum sea level duríng OIS 7. Fossil corals (Cladocora Caespitosa) underlying an OIS 5e marine unít yielded U-series ages
from 178 ± (0 to 208 ± 1) ka (± 20σ n=7) with an outlier al 240 ± 18 ka. Mean open-system limit ages of 170 ± 10 (minimum age
after correction for 234Th-230Th uptake) and 237 ± 20 ka (maximum ase after correction for 238U - 234U uptake) were calculated to
have a probable age closer to the minimum value, for an assignment of OlS 7a or 7c. The occurrence of a warn-water "Senegalese"
fauna (Strombus bubonius) in OIS5e and OIS 7 marine units confirms the arrival of tropical species to the Mediterranean before
the last interglacial periodo Morpho-sedimentological and neotectonic studies suggest that the maximum paleo-sea level during
OIS 7c or 7a was a few melers below that of OlS Se.


Tipo de documento:Artículo
Palabras clave:Oxygen isotopic stage 7, Western Mediterranean, Cladocora caespitosa, "Senegalese" fauna, Neotectonics
Materias:Ciencias > Geología > Geología estratigráfica
Ciencias > Geología > Geodinámica
Código ID:10880
Depositado:21 Jun 2010 11:41
Última Modificación:15 Sep 2010 07:49

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