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| Titel |
Quaternary glacial geomorphosites from the Cantabrian Mountains (northern Iberian Peninsula): the Redes Natural Reservation and Picos de Europa Regional Park |
| VerfasserIn |
Laura Rodríguez-Rodríguez, Montserrat Jiménez-Sánchez, María José Domínguez-Cuesta |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250077298
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| Zusammenfassung |
| The Cantabrian Mountains is a mountain range 480 km-long and up to 2,648 m altitude
(Torre Cerredo Peak) trending parallel to the Cantabrian Coastline between Pyrenees and the
northwest corner of the Iberian Peninsula (~43oN 5oW). This mountain range is an
outstanding area to research the climatic patterns across South Europe during the Quaternary
glaciations since well-preserved glacial features evidence the occurrence of past mountain
glaciations in a climatic environment marked by the transition from a maritime climate
(Atlantic) to Mediterranean one across the mountain range. The available studies in the
Cantabrian Mountains stand that the regional glacial maximum recorded here is prior to ca
38, and that glaciers were in some locations remarkably retreated by the time of the
global Last Glacial Maximum (Jiménez-Sánchez et al., in press; Serrano et al., in
press).
This study is focused on an area about 800 km2 that includes 36 peaks over 2,000 m (Pico
Mampodre; 2,192 m) and partially covers the Redes Natural Reservation and Picos de Europa
Regional Park. A geomorphologic database in ArcGIS was produced for this area
as a previous step to reconstruct in detail the extent, flow pattern and chronology
of the former glaciers (PhD under progress). Here we present a selection of 18
glacial geomorphosites classified according to genetic criteria in sites that show:
(i) a nicely preserved moraine sequence recording the transition from glacial to
periglacial conditions; (ii) glacial erosion features; (iii) glacial and ice related deposits
(like moraines, ice-dammed deposits, erratic boulders or fluvio-glacial deposits);
(iv) slope instability related to glacial debuttressing (complex landslides and rock
avalanches); and (v) the interaction between the landscape and human activity. The
interest of the geomorphosites is supported by its good quality of preservation,
allowing its use as a basis to reconstruct the glacial and paraglacial processes in
this region during the Quaternary glaciations, especially after the last local glacial
maximum.
Jiménez-Sánchez, M., Rodríguez-Rodríguez, L., García-Ruiz, J.M., Domínguez-Cuesta,
M.J., Farias, P., Valero-Garcés, B., Moreno, A., Rico, M., Valcárcel, M., in press. A review of
glacial geomorphology and chronology in northern Spain: timing and regional variability
during the last glacial cycle. Geomorphology, doi: 10.1016/j.geomorph.2012.06.009.
Serrano, E., González-Trueba, J.J., Pellitero, R., González-García, M., Gómez-Lende,
M., in press. Quaternary glacial evolution in the Central Cantabrian Mountains (Northern
Spain). Geomorphology, doi:10.1016/j.geomorph.2012.05.001.
Research funded by the project CANDELA (CGL2012-31938) of the Spanish national
research program in Earth Sciences and Hydric Resources (MICINN) and the project
FC-11-PC-10-14 (FICYT-Asturias). L. Rodríguez-Rodríguez has developed her research
under a grant of the Severo Ochoa Program (FICYT- Asturias). |
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