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- Title
DISTRIBUCIÓN ESPACIAL Y TEMPORAL DE GLACIARES, GLACIARES CUBIERTOS Y GLACIARES ROCOSOS DURANTE LA ÚLTIMA DEGLACIACIÓN EN EL VALLE DE LA BONAIGUA (PIRINEO CENTRAL).
- Authors
VENTURA-ROCA, J.
- Abstract
The application of the paleogeographic method to the study of glacial landforms and rock glaciers allows their morphometric and sedimentological characterization, the establishment of a detailed morphostratigraphic sequence and a chronological proposal for the identified glacial phases. This study analyzes 86 landforms (57 glacial deposits, 21 rock glaciers and 8 protalus ramparts) in the Bonaigua Valley (Noguera Pallaresa Basin, Central Pyrenees), with special attention to the differentiation between debris-covered glaciers and rock glaciers. Other subjects studied concerning rock glaciers are: distinguish its glacial or periglacial origin; the possible current activity of some landforms, and the detection of rock glaciers located at low altitudes (in the current forest environment) through the use of high-resolution digital elevation model (2x2 m) from LIDAR data. The chronological hypothesis elaborated by correlation with other high Pyrenean valleys (with absolute ages available) includes 7 phases (6 glacial phases and 1 periglacial phase) in which co-exist and/or evolve, in a paraglacial dynamic, glaciers, debris-covered glaciers and rock glaciers, and that we temporarily place between the end of the Oldest Dryas and the Little Ice Age.
- Subjects
PYRENEES; ROCK glaciers; LITTLE Ice Age; DIGITAL elevation models; LANDFORMS; GLACIERS; GLACIAL landforms; LIDAR
- Publication
Cuadernos de Investigación Geográfica, 2020, Vol 46, Issue 2, p413
- ISSN
1697-9540
- Publication type
Article
- DOI
10.18172/cig.4395