Cerro Blanco 4.2 ka volcanic ash deposit at Cerro Colorado (Córdoba Province, Argentina)

Authors

  • Gabriella Boretto University of Cordoba Author
  • Giovanni Zanchetta University of Pisa Author
  • Monica Bini University of Pisa Author
  • Marcela Cioccale University of Cordoba Author
  • Claudio Carignano University of Cordoba Author
  • Sandra Gordillo University of Cordoba Author
  • Biagio Giaccio CNR Author
  • Jose-Luis Fernandez-Turiel GEO3BCN, CSIC, Barcelona Author
  • Ilenia Arienzo INGV Author
  • Ilaria Isola INGV Author

DOI:

https://doi.org/10.4461/GFDQ.2021.44.13

Keywords:

tephra, Holocene, Cerro colorado, Cerro Blanco, Argentina

Abstract

A tephra layer was recovered within the Holocene fluvial succession of the Cerro Colorado Cultural and Natural Reserve in the Córdoba Province (Argentina). Radiocarbon dating on organic matter preserved within the paleosoil beneath the tephra layer indicate that the ash layer is younger than ca. 4700 cal yr BP. Radiocarbon ages, Sr and Nd isotope data on the bulk rock, and microanalytical data on glass shards allow us to identify the Andean Central Volcanic Zone as the possible source area of the analyzed tephra. Our data highlight that the tephra layer recovered in the Córdoba Province was produced by volcanoes of the southern fringe of the Andean Central Volcanic Zone and that it can be confidently correlated with the Cerro Blanco 4200 cal yr BP eruption. These findings are also coherent with the known dispersion axis of the products of this eruption and allow further constraining their dispersion. This latter is extremely important for any attempt in volcanic hazard assessment. 

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Published

2024-03-14

Issue

Section

Research and review papers

How to Cite

Boretto, G., Zanchetta, G., Bini, M., Cioccale, M., Carignano, C., Gordillo, S., Giaccio, B., Fernandez-Turiel, J.-L., Arienzo, I., & Isola, I. (2024). Cerro Blanco 4.2 ka volcanic ash deposit at Cerro Colorado (Córdoba Province, Argentina). Geografia Fisica E Dinamica Quaternaria, 44(2), 173-181. https://doi.org/10.4461/GFDQ.2021.44.13

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