New speleothem data from Molinos and Ejulve caves reveal Holocene hydrological variability in northeast Iberia

Moreno, A. ; Perez-Mejias, C. ; Bartolome, M. ; Sancho, C. (Universidad de Zaragoza) ; Cacho, I. ; Stoll, H. ; Delgado-Huertas, A. ; Hellstrom, J. ; Edwards, R.L. ; Cheng, H.

Resumen: New speleothem records from northeastern Iberian caves provide data to explore the climatic patterns during the Holocene. We present delta C-13 and Mg/Ca from three speleothems from two different caves located in the Iberian Range allowing replication of the climatic signal for several millennia. Through the integration of those stalagmites covering since the Holocene onset to 2 ka, the early Holocene (11.7-8.5 ka) appears as the wettest interval. A marked change towards aridity is observed during the middle Holocene (8.5-4.8 ka) and an increase of humidity afterwards (4.8-2 ka). This three-part pattern, contrasting with other Iberian sequences, seems to be associated with the different role that seasonality has played in the response of different proxies (or records) to changes in water availability. Interpreting our speleothem records as changes in winter-spring precipitation along the Holocene allows reconciling previous data on hydrological variability from the western Mediterranean borderlands.

Idioma: Inglés

DOI: 10.1017/qua.2017.39

Año: 2017

Publicado en: QUATERNARY RESEARCH 88, 2 (2017), 223-233
ISSN: 0033-5894

Factor impacto JCR: 2.329 (2017)

Categ. JCR: GEOSCIENCES, MULTIDISCIPLINARY rank: 76 / 189 = 0.402 (2017) - Q2 - T2
Categ. JCR: GEOGRAPHY, PHYSICAL rank: 26 / 49 = 0.531 (2017) - Q3 - T2

Factor impacto SCIMAGO: 1.216 - Arts and Humanities (miscellaneous) (Q1) - Earth-Surface Processes (Q1) - Earth and Planetary Sciences (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/GA-LC-021-2008
Financiación: info:eu-repo/grantAgreement/ES/DGA/GA-LC-030-2011
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2009-10455-BTE
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2010-16376
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2016-77479-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTM2013-48639-C2-1-R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Geodinámica Externa (Dpto. Ciencias de la Tierra)