Factores que controlan la relacion Sr/Ca en foraminiferos planctonicos y su repercusion en las reconstrucciones de paleotemperaturas basadas en corales  [Factors controlling Sr/Ca ratio in planktonic foraminifers and their implications in paleotemperature reconstructions based on corals]

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Alternate Title(s): Factors controlling Sr/Ca ratio in planktonic foraminifers and their implications in paleotemperature reconstructions based on corals
Author(s): González-Mora, Beatriz; Pérez-Martín, Rubén
Author Affiliation(s): Primary:
Universidad de Salamanca, Departamento de Geologia, Salamanca, Spain
Volume Title: Comunicaciones presentadas en la 45 sesion cientifica de la Sociedad Geologica de España
Volume Author(s): Alonso Chaves, F. M., editor; Fernandez Rodriguez, C.; Morales, J. A.; Colombo, F.
Source: Geogaceta, Vol.45, p.103-106; 45. sesion cientifica de la Sociedad Geologica de España, Leioa, Spain, Nov. 28, 2008, edited by F. M. Alonso Chaves, C. Fernandez Rodriguez, J. A. Morales and F. Colombo. Publisher: Sociedad Geológica de España, Salamanca, Spain. ISSN: 0213-683X
Note: In Spanish with English summary. 10 refs.; illus.
Summary: Samples from core ODP site 977, retrieved in the Alboran Sea (Western Mediterranean Sea), have been studied in order to better constrain the factors controlling the Sr/Ca ratio in planktonic foraminifers. For this purpose, this ratio has been measured in two different species, Neogloboquadrina pachyderma (right coiling) and Globigerina bulloides, in samples from the marine isotope stage 7 (250-190 kyr). The fast and pronounced fluctuations in shell Sr/Ca observed between substages cannot only respond to water salinity, pH nor temperature changes. However, the results obtained suggest that shell Sr/Ca variations in planktonic foraminifers from the Alboran Sea are also related to Sr/Ca glacial/interglacial changes in the ocean. This would mean that the paleotemperature reconstructions based on corals, might be revised since coral Sr paleothermometry would have underestimated sea surface temperature during glacial episodes.
Year of Publication: 2008
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; Alboran Sea; Alkaline earth metals; Calcium; Cenozoic; Cnidaria; Foraminifera; Glacial environment; Globigerina; Globigerina bulloides; Globigerinacea; Globigerinidae; Interglacial environment; Invertebrata; Isotopes; Leg 161; MIS 7; Mediterranean Sea; Metals; Microfossils; ODP Site 977; Ocean Drilling Program; Paleotemperature; Planktonic taxa; Protista; Quaternary; Rotaliina; Shells; Sr/Ca; Strontium; West Mediterranean
Coordinates: N360154 N360154 W0015719 W0015719
Record ID: 2014037452
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Instituto Geologico y Minero de Espana, Madrid, Spain