Evolucion termica de distintas masas de agua a lo largo del estadio isotopico marino 7 basada en el Mg/Ca de la concha de los foraminiferos planctonicos  [Thermal evolution of different water masses during Marine Isotope Stage 7 based on planktonic foraminifer shell Mg/Ca]

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Alternate Title(s): Thermal evolution of different water masses during Marine Isotope Stage 7 based on planktonic foraminifer shell Mg/Ca
Author(s): González-Mora, Beatriz; Sierro, F. J.
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.91-94; 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. 18 refs.; illus.
Summary: Mg/Ca measurements have been performed on tests from the planktonic foraminifers Globigerinoides ruber (white) and Globigerina bulloides in samples from ODP site 977A in the Alboran Sea (Western Mediterranean) in order to estimate their calcification temperatures between 250 and 190 ka and therefore, analyse the evolution of different water masses in the Alboran Sea during that time. The results obtained are similar to the sea surface temperatures estimated by other methods in previous studies carried out in the same core. All substages in marine isotope stage 7 are well defined in the paleotemperature estimates, excepting substage 7.2 which is not recognized in Globigerina bulloides. Warm substages were characterized by strong seasonality and thermal stratification of the water column. By contrast, less pronounced seasonality and basin stratification seem to have prevailed during cold substages.
Year of Publication: 2008
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 07 Marine Geology and Oceanography; Alboran Sea; Alkaline earth metals; Calcium; Foraminifera; Globigerina; Globigerina bulloides; Globigerinacea; Globigerinidae; Invertebrata; Isotopes; Leg 161; MIS 7; Magnesium; Marine environment; Mediterranean Sea; Metals; Mg/Ca; Microfossils; ODP Site 977; Ocean Drilling Program; Planktonic taxa; Protista; Rotaliina; Shells; Temperature; West Mediterranean
Coordinates: N360154 N360154 W0015719 W0015719
Record ID: 2014037449
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Instituto Geologico y Minero de Espana, Madrid, Spain