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Title:Investigating peatland stratigraphy and development of the Šijec bog (Slovenia) using near-surface geophysical methods
Authors:ID Pezdir, Valentina (Author)
ID Čeru, Teja (Author)
ID Horn, Barbara (Author)
ID Gosar, Mateja (Author)
Files:.pdf PDF - Presentation file, download (23,80 MB)
MD5: 4227253ECA904FE5F14D9F955A138491
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo GeoZS - Geological Survey of Slovenia
Abstract:Owing to their anoxic environment, peatlands play an important role in the preservation of records documenting past atmospheric depositions. To determine past records, data on peat stratigraphy and bog development are needed. Ground penetrating radar (GPR) was used to determine the peat thickness and morphology of the Šijec bog on the Pokljuka plateau in Slovenia, which will serve as a basis for further geochemical studies. Information on the stratigraphy below the peat/clay boundary was acquired by applying electrical resistivity tomography (ERT). The GPR results reveal four depressions within the peat bog, which are separated by elevated ridges. Within the depressions the peat reaches a depth of 6–9 m. The edges of the bog are flat, with peat thickness ranging from 2 to 4 m. The reach of the GPR was complemented with manual peat probing. A comparison of the depths obtained using GPR and the peat probe reveals that the results of both methods correspond well in most locations. The ERT indicated similar peat depths; peat responds with high electrical resistivity. In contrast, clayey sediments with low resistivity are found below the peat. The peat depressions are underlain with larger clayey depressions reaching more than 20 m in thickness and represent lake sediments. The complementary geophysical methods proved to be an efficient approach with which we can delineate the peat morphology and the underlying stratigraphy. Both indicate bog formation from a lake with four deeper depressions, that are separated by glacial deposits. The results presented here show the potential for geophysical methods to infer formational processes in peatlands, showing the presence of a series of isolated basins that later coalesced into a single peat landform. This interpretation is consistent with previous conceptual models from studies in boreal regions.
Keywords:peatland, ground penetrating radar, electrical resistivity tomography, peat probing, peat thickness
Publication status:Published
Publication version:Version of Record
Publisher:Elsevier
Year of publishing:2021
Number of pages:15 str.
Numbering:Vol. 206
PID:20.500.12556/DiRROS-15264 New window
UDC:550.3
ISSN on article:0341-8162
DOI:10.1016/j.catena.2021.105484 New window
COBISS.SI-ID:66109443 New window
Publication date in DiRROS:07.07.2022
Views:1147
Downloads:608
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PEZDIR, Valentina, ČERU, Teja, HORN, Barbara and GOSAR, Mateja, 2021, Investigating peatland stratigraphy and development of the Šijec bog (Slovenia) using near-surface geophysical methods. Catena [online]. 2021. Vol. 206. [Accessed 6 April 2025]. DOI 10.1016/j.catena.2021.105484. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=15264
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Record is a part of a journal

Title:Catena
Publisher:Elsevier
ISSN:0341-8162

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:J1-1713
Name:Dinamika in snovni tok potencialno strupenih elementov (PSE) v urbanem okolju
Funder:ARRS - Slovenian Research Agency
Funding programme:Mladi raziskovalci
Funder:ARRS - Slovenian Research Agency
Project number:P1-0020
Name:Podzemne vode in geokemija

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:03.06.2021

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