Cronología de los depósitos tobáceos del río Val (Cordillera Ibérica, provincia de Soria)

• C. Sancho ^[1] ; M. Bartolomé ^[1] ; C. Arenas ^[1] ; J. Aranbarri ^[2] ; A. Moreno ^[3] ; H. Cheng ; L. R. Edwards ^[4]
  1. [1] Universidad de Zaragoza

     Universidad de Zaragoza

     Zaragoza, España

     
  2. [2] Universidad del País Vasco/Euskal Herriko Unibertsitatea

     Universidad del País Vasco/Euskal Herriko Unibertsitatea

     Leioa, España

     
  3. [3] Instituto Pirenaico de Ecología

     Instituto Pirenaico de Ecología

     Zaragoza, España

     
  4. [4] University of Minnesota

     University of Minnesota

     City of Minneapolis, Estados Unidos

     

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• Localización: XV Reunión Nacional de Cuaternario Bizkaia Aretoa: Bilbao, 1-5 julio 2019. Libro de resúmenes, 2019, ISBN 978-84-17713-16-4, págs. 285-288
• Idioma: español
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• Resumen

  • Fluvial tufa build-ups located in the Val river (Ágreda, Soria province) have been investigated. Important tufa terraces crop out from Val spring to 8 km downstream along the river. U/Th ages derived from post-depositional speleothems corroborate previous radiocarbon ages stablished along the Holocene. In a higher position respect to the river an extensive terrace dominates the landscape in the area. These tufa buildings show stem rudstonse, floatstones and packstones, leaf prints and eventually oncoid-rich facies. U/Th ages mark a period of tufa development around 240 ky ago, corresponding with the increase of water availability during MIS7. Similar tufa growing periods are recognized in other rivers through the Iberian Range.