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

Goy Goy, José Luis and Hillaire-Marcel, Claude and Zazo Cardeña , Caridad and G., Bassam and Dabrio, Cristino J. and González Ureña, Ángel and Bardají Azcárate, Teresa and Civis Llovera, Jorge and Preda, Michael and Yébenes, A. and 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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Abstract

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.

Item Type:Article
Uncontrolled Keywords:Oxygen isotopic stage 7, Western Mediterranean, Cladocora caespitosa, "Senegalese" fauna, Neotectonics
Subjects:Sciences > Geology > Stratigraphic geology
Sciences > Geology > Geodynamics
ID Code:10880
Deposited On:21 Jun 2010 11:41
Last Modified:15 Sep 2010 07:49

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