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Title

Potencial paleoclimático de la cueva helada A294 (Macizo de Cotiella, Pirineos, Huesca)

AuthorsSancho Marcén, Carlos; Belmonte, Anchel; López-Martínez, J.; Moreno Caballud, Ana ; Bartolomé, Miguel ; Santolaria, P.
Issue Date2012
PublisherSociedad Geológica de España
CitationGeogaceta 52: 101- 104 (2012)
Abstract[EN] The A294 is a small ice cave (2238 m.a.s.l.) located in the Cotiella karstic massif in the Spanish central Pyrenees.The bottom of the cave houses an ice deposit of almost 10 meters thick. Most of the ice comes from freezing of the snow that enters through the cave entrance. Its structure shows a stratified ice with many inner debris layers including many vegetal remnants. Radiocarbon calibrated age of the lower section of the deposit ranges from 5516±70 to 3808±104 y BP, and as a consequence it is one of the oldest subsurface ice deposits known so far in Europe. Highest rates of ice accumulation identified in the deposit are related to cold Middle Holocene stages at global scale. Isotopic data (δ 18 O and δ 2 D) variability points to centennial/decadal alternating thermal stages. Ice caves are revealed as potential high resolution records of recent climate change in the Pyrenees. [ES]
Publisher version (URL)http://www.sociedadgeologica.es/archivos/geogacetas/geo52/art25.pdf
URIhttp://hdl.handle.net/10261/66793
Identifiersissn: 2173-6545
Appears in Collections:(IPE) Artículos
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