Geophysical prospection on Late Quaternary sediments in the Gallego Valley, Central Spanish Pyrenees

  • This study aims to characterize the Late Quaternary stratigraphy in a type region of Pleistocene glaciation in the Central Spanish Pyrenees by using geophysical prospection techniques to extrapolate stratigraphical field information from soil pits. The main objectives are (i) to identify the thickness of the Quaternary sediments, (ii) to characterize the internal structures and stratifications within the Quaternary deposits and (iii) to test the validity of combined geophysical prospection techniques, including shallow seismic refraction (SSR) and electric resistivity tomography (ERT). We focus on two selected study sites: the Late Pleistocene terminal moraine at Senegüé on the bottom of the Gállego Valley and a Pleistocene non-glaciated slope located nearby. This study proves that information about the depth, structure and distribution of Late Quaternary sediments (glacial, periglacial and fluvial) can be gathered by the combination of geophysical techniques (SSR and ERT). These techniques allow for a reliable, inexpensive and fastThis study aims to characterize the Late Quaternary stratigraphy in a type region of Pleistocene glaciation in the Central Spanish Pyrenees by using geophysical prospection techniques to extrapolate stratigraphical field information from soil pits. The main objectives are (i) to identify the thickness of the Quaternary sediments, (ii) to characterize the internal structures and stratifications within the Quaternary deposits and (iii) to test the validity of combined geophysical prospection techniques, including shallow seismic refraction (SSR) and electric resistivity tomography (ERT). We focus on two selected study sites: the Late Pleistocene terminal moraine at Senegüé on the bottom of the Gállego Valley and a Pleistocene non-glaciated slope located nearby. This study proves that information about the depth, structure and distribution of Late Quaternary sediments (glacial, periglacial and fluvial) can be gathered by the combination of geophysical techniques (SSR and ERT). These techniques allow for a reliable, inexpensive and fast extrapolation of stratification information from soil pits and enable Late Quaternary and Eocene sediments to be distinguished. The reconstruction of the sediment genesis is facilitated by the geophysical techniques due to the potential to prospect the internal structures of large areas.show moreshow less

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Metadaten
Author: Florian HirschORCiD, Thomas RaabORCiDGND
DOI:https://doi.org/10.1127/0372-8854/2014/S-00165
ISSN:1864-1687
Title of the source (English):Zeitschrift für Geomorphologie, Suppl.
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2014
Volume/Year:58
Issue number:3
First Page:47
Last Page:62
Faculty/Chair:Fakultät 2 Umwelt und Naturwissenschaften / FG Geopedologie und Landschaftsentwicklung
Institution name at the time of publication:Fakultät für Umweltwissenschaften und Verfahrenstechnik (eBTU) / LS Geopedologie und Landschaftsentwicklung
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