New Micropaleontological Record (Foraminifera and Ostracoda) from the Late Glacial and Holocene in Salinas del Bebedero, San Luis, Argentina: A Paleoenvironmental Interpretation

  • Lydia Calvo MarcileseEmail author
  • Sabina D’Ambrosio
  • Leandro D. Rojo
  • Gabriela C. Cusminsky
Conference paper
Part of the Springer Earth System Sciences book series (SPRINGEREARTH)


Since the 1980s, just a few studies have been conducted related to foraminifera and ostracoda in endorheic environments of Argentina. In core SB III from Salinas del Bebedero, a preliminary report on 51 sediment samples between 986 and 506 cm (ca. 12,600–3600 yrs BP) recorded only 12 fertile samples. Seven samples showed typical marginal marine microfaunal assemblages with high abundance of the foraminifer Ammonia tepida associated with few specimens of Elphidium excavatum. Concerning ostracods, they are poorly represented except by six levels with Limnocythere aff. staplini and Cyprideis salebrosa hartmanni. It is worthy to note that ostracods and foraminifers were not recorded coexisting, with the exception of one sample (830–828 cm). The remarkably high abundance of foraminiferal assemblages, with more than 170 individuals per gram in some levels, is outstanding and deserves special attention. The AmmoniaElphidium assemblage is well known in shallow marginal marine environments at global scale, whereas the two ostracod species found are common of lacustrine environments with high salinity range. Previous hypothesis indicates that birds and/or the wind as vectors were responsible for the presence of that particular microfauna in Salinas del Bebedero. These preliminary studies aim to contribute to the analysis of materials from athalassic environmental basins in order to increase the knowledge about the typical marine microfauna living in continental environments and their potential implications in paleoenvironmental interpretation.


Saline lakes Paleoenvironmental reconstruction Micropaleontological analysis San Luis Argentina 



Financial support for this study was provided by Secretaría de Ciencia, Técnica y Posgrado, and Universidad Nacional de Cuyo (M016 SeCTyP-UNCuyo 2013–2015). The authors wish to thank Jorge O. Chiesa for providing access to SBIII core and helping in sediment sampling. This paper is a contribution to the projects IB 619. Análisis de Análogos Modernos (Y-TEC S.A); PIP 2013-00021 and PICT 2014-1271.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Lydia Calvo Marcilese
    • 1
    Email author
  • Sabina D’Ambrosio
    • 2
  • Leandro D. Rojo
    • 3
  • Gabriela C. Cusminsky
    • 4
  1. 1.Y-TEC (YPF TECNOLOGÍA)Buenos AiresArgentina
  2. 2.IANIGLA-CONICETMendozaArgentina
  3. 3.Facultad de Ciencias Exactas y Naturales de la Universidad Nacional de Cuyo (FCEN-UNCuyo)Museo de Historia Natural de San Rafael (MHNSR) Ballofet S/N frente a Parque Mariano MorenoSan Rafael, MendozaArgentina
  4. 4.INIBIOMA (CONICET)San Carlos de BarilocheArgentina

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