Erosive Response of Non-Glaciated Pyrenean Headwater Catchments to the Last Major Climate Transition and Establishing Interglacial Conditions

Dados Bibliográficos

ID15801831
AutoresKurt Martin Stange (0000-0001-6181-8779, University of Bremen, autor correspondente), Kurt Stange (University of Bremen), Ivar Midtkandal (0000-0002-4507-288X, University of Oslo), Johan Petter Nystuen (University of Oslo), Johan Nystuen (University of Oslo), Andrew S Murray (0000-0001-5559-1862, Aarhus University), Andrew Murray (0000-0002-3625-9140, Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, 8000 Aarhus, Denmark), Reza Sohbati (0000-0002-2382-0103, Technical University of Denmark), Warren Thompson (0000-0003-2442-2964, Aarhus University), Cornelia Spiegel (0000-0002-1432-3447, University of Bremen), Hans-Joachim Kuss (University of Bremen)
Ano2019
Volume2
Fascículo2
Páginas17-17
Data de publicação2019-05-07
Peer ReviewedSim
Open AccessSim
TipoARTICLE
PeriódicoQuaternary (JOURNAL)
Identificadores do periódicoISSN: 2571-550X • E-ISSN: 2571-550X
EditoraMultidisciplinary Digital Publishing Institute (PUBLISHER • CH)
DOI10.3390/quat2020017
OpenAlexW2944731472
IdiomaEN
Citações recebidas1
Referências citadas63

Non-glaciated mountain headwater catchments feature high-resolution geomorphic archives, which provide important insight into erosive processes and sediment dynamics in mountain ranges. As such the Valle de la Fueva catchments in the southern Pyrenees present high-lying talus remnants, extensive denudation surfaces (pediments), deeply incised tributary ravines, and low-lying fluvial-cut terraces. Based on geomorphic analyses and absolute dating using terrestrial cosmogenic nuclides and optically stimulated luminescence, a (late stage) catchment erosion model for the Valle de la Fueva was elaborated and indicates successive development stages of (i) lasting pedimentation under cold-climate conditions during Marine Isotope Stages 4–2, (ii) rapid fluvial dissection, sediment remobilization and downcutting of ravines in response to the last major climate transition and establishing interglacial conditions, and (iii) late stage fluvial incision after 3–4 ka due to regionally increased flood magnitudes, and/or intensification of agriculture and forest management. Valle de la Fueva headwater catchment analysis indicated that the styles and magnitudes of basin surface processes were directly correlated with the amplitude and nature of paleoclimatic changes, modified by the interplay of environmental parameters. In contrast to large-scale fluvial systems, mountain headwater catchments seemed to be less afflicted with temporal and spatial averaging biases. They are thus useful targets for investigating direct climate change effects, surface process coupling, and non-linear response mechanisms in Quaternary fluvial systems

Archaeology · Aridification · Climate change · Cosmogenic nuclide · Denudation · Drainage basin · Fluvial · Geography · Geomorphology · Glacial period · Hydrology (agriculture · Interglacial · Marine isotope stage · Physical geography · Plateau (mathematics · Quaternary · Ravine · Structural basin · Tectonics · Tributary · Cryospheric studies and observations · Geological formations and processes · Geology and Paleoclimatology Research · Geology · Oceanography · Paleontology