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Título

Asynchroneity of maximum glacier advances in the central Spanish Pyrenees

AutorGarcía-Ruiz, José María ; Valero-Garcés, Blas L. ; Martí Bono, Carlos Enrique ; González-Sampériz, Penélope
Palabras claveLast Glacial Maximum
Glaciers
Upper Gállego Valley
Central Spanish Pyrenees
Fecha de publicación28-nov-2002
EditorWiley-Blackwell
CitaciónJournal of quaternary science 18 (1): 61-72 (2003)
ResumenThe deglaciation history of the Escarra and Lana Mayor glaciers (Upper Gállego valley, Central Spanish Pyrenees) was reconstructed on the basis of detailed geomorphological studies of glacier deposits, sedimentological and palynological analyses of glacial lakes sediments and an AMS chronology based on minimum ages from glacial lake deposits. The maximum extent of the Pyrenean glaciers during the last glaciation was before 30,000 years B.P. and predated the maximum advances of the Scandinavian Ice Sheet and some Alpine glaciers. A later advance occurred during the coldest period (around 20,000 years B.P.) synchronous with the maximum global ice extent, but in the Pyrenees it was less extensive than the previous one. Later, there were minor advances followed by a stage of debris-covered glaciers and a phase of moraine formation near cirque backwalls. The deglaciation chronology of the Upper Gállego valley provides more examples of the general asynchroneity between mountain and continental glaciers. The asynchroneity of maximum advances may be explained by different regional responses to climatic forcing and by the southern latitudes of the Pyrenees.
Descripción31 páginas, 7 figuras, 1 tabla
Versión del editorhttp://dx.doi.org/10.1002/jqs.715
URIhttp://hdl.handle.net/10261/47613
DOI10.1002/jqs.715
ISSN0267-8179
10.1002/jqs.715
E-ISSN1099-1417
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