Glacial evolution of the upper Gallego Valley (Panticosa mountains and Ribera de Biescas, Aragonese Pyrenees, Spain)
DOI:
https://doi.org/10.3989/pirineos.1991.v138.191Keywords:
Pyrenees, glacial geomorphology, Pleistocene, Holocene, glacial phasesAbstract
Glacial evolution in the upper Gallego Valley has been established by studying erosional and depositional land forms. Ten pulsations, related to five phases are described: Premaximal (F. G. 0), attributed to Middle Pleistocene; Peniglacier, with three expanding pulsations (F.G. 1, 2 y 3), is attributed to the Upper Pleistocene; Finipleniglacial with two phases of dynamic (F.G. 4 y 5') and climatic (F.G. 5) equilibrium associated with the Pleistocene deglaciation; high mountain phase (F.G. 6 y 7), with two morphogenetic episodes; and the Holocene pulses from the Little Ice Age.
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