Datación de sedimentos recientes utilizando radionucleidos de vida corta

Autores/as

  • Alejandro Cearreta Bilbao
  • José E. Gómez-Arozamena
  • María Jesús Irabien
  • Ana Carolina Ruiz-Fernández
  • Joan-Albert Sanchez-Cabeza
  • Josefina Ortiz
  • Marina Sáez‑Muñoz

DOI:

https://doi.org/10.17735/cyg.v36i3-4.93504

Palabras clave:

210Pb; 137Cs; 239,240Pu; Antropoceno

Resumen

Se presentan las características principales del método de datación de sedimentos recientes mediante el radioisótopo natural 210Pb y su validación utilizando radionucleidos artificiales tales como 137Cs y 239,240Pu. Se hace una revisión de los principios generales de esta metodología, se aportan recomendaciones prácticas para la recogida de testigos sedimentarios en el campo y su posterior procesamiento en el laboratorio, se describen diferentes técnicas analíticas utilizadas en la determinación de sus concentraciones y se explican brevemente varios modelos para la interpretación de los perfiles obtenidos. Por último, se incluyen ejemplos prácticos de su aplicación en secuencias sedimentarias procedentes de distintos ambientes marinos (estuario, bahía y plataforma continental) en el norte de la Península Ibérica.

Citas

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Publicado

2022-12-15

Número

Sección

Artículos de Investigación