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Spatial and Paleoclimatic Reconstruction of the Peña Negra Paleoglacier (Sierra de Béjar-Candelario, Spain) during the Last Glacial Cycle (Late Pleistocene)

Author

Listed:
  • Carlos E. Nieto

    (Department of Geology, Faculty of Sciences, Merced Square, University of Salamanca, 37008 Salamanca, Spain)

  • Ana Calvo

    (Department of Geology, Faculty of Sciences, Merced Square, University of Salamanca, 37008 Salamanca, Spain)

  • Raquel Cruz

    (Department of Geology, Faculty of Sciences, Merced Square, University of Salamanca, 37008 Salamanca, Spain)

  • Antonio Miguel Martínez-Graña

    (Department of Geology, Faculty of Sciences, Merced Square, University of Salamanca, 37008 Salamanca, Spain)

  • José Luis Goy

    (Department of Geology, Faculty of Sciences, Merced Square, University of Salamanca, 37008 Salamanca, Spain)

  • José Ángel González-Delgado

    (Department of Geology, Faculty of Sciences, Merced Square, University of Salamanca, 37008 Salamanca, Spain)

Abstract

The study of the Peña Negra paleoglacier during the Last Glacial Maximum reveals its sensitivity to paleoclimatic variations. The evolutionary phases of the paleoglacier are correlated with the evolutionary models proposed for the Sierra de Béjar-Candelario and the Central Iberian System. To recognize the mechanisms of ice advance/retreat and the response of the glacier to paleoclimatic variations, modeling is carried out based on a geographic information system tool. This model is key to establishing the spatial extent of the ice and the estimation of the Equilibrium line altitudeequilibrium line altitudes at each moment, which makes it easier to infer the approximate climatic conditions of each phase (temperature and precipitation) and allows us to improve the understanding of the glacial dynamics versus variations in paleoenvironmental conditions and paleoglacial morphometry. The spatial reconstruction data show that the paleoglacier had 0.526 km 3 of ice during the phase of maximum extension, while the paleoclimatic data reflect an increase in precipitation and a slight decrease in average summer temperatures compared to today. The stability phases are associated with the periods of greatest precipitation when the mass balance was positive.

Suggested Citation

  • Carlos E. Nieto & Ana Calvo & Raquel Cruz & Antonio Miguel Martínez-Graña & José Luis Goy & José Ángel González-Delgado, 2023. "Spatial and Paleoclimatic Reconstruction of the Peña Negra Paleoglacier (Sierra de Béjar-Candelario, Spain) during the Last Glacial Cycle (Late Pleistocene)," Sustainability, MDPI, vol. 15(23), pages 1-18, December.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:23:p:16514-:d:1293130
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    References listed on IDEAS

    as
    1. Antonio Miguel Martínez-Graña & José Luis Goy & José Ángel González-Delgado & Raquel Cruz & Juana Sanz & Carmen Cimarra & Irene De Bustamante, 2018. "3D Virtual Itinerary in the Geological Heritage from Natural Areas in Salamanca-Ávila-Cáceres, Spain," Sustainability, MDPI, vol. 11(1), pages 1-17, December.
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