A szélerózió szerepe a dunántúl negyedidoszaki felszínfejlodésében

Translated title of the contribution: The role of wind erosion in the surface development of Transdanubia during the quarternary

Gábor Csillag, L. Fodor, Krisztina Sebe, P. Müller, Zsófia Ruszkiczay-Rüdiger, Thamóné Bozsó Edit, Bada Gábor

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The role of deflation in the Pliocene-Quaternary evolution of Transdanubia (western Pannonian Basin) is one of the long-debated questions of earth sciences in Hungary. The present paper investigates the importance of wind erosion in shaping the topography of the area using data collected from existing literature, field records and digital elevation models. With respect to the morphology of the fan-shaped system of N-S to NNW-SSE striking linear ("meridional") valleys, the basaltic buttes of the Little Hungarian Plain and of the Tapolca and Kál Basins, the deflation hollows together with the relatively abundant ventifacts in the Transdanubian Range. In other words, from the Keszthely to the Vértes Hills and in the foreland of the Mecsek Mountains the morphology indicates the significance of deflation. Analogies from the Sahara suggest that deflation could have played an important role in the formation of the row of depressions now partly filled with shallow lakes in the south-eastern, lee-side foreland of the Transdanubian Range. Furthermore, the "meridional" ridges can be considered to be yardangs, while the valleys between them are wind channels. Naturally, during intervals with a climate similar to that in the Holocene, fluvial erosion, slope processes and, in the case of lakes, wave abrasion were also important factors in forming the present-day topography. The minimum exposure ages of wind-polished rock surfaces and OSL ages of the accumulated aeolian sands were used to date wind erosion. Chronological data indicate that in Transdanubia deflation must have caused considerable denudation in several phases at least during the last 1.5 million years and sand movement recurred as late as the early Holocene.

Original languageHungarian
Pages (from-to)463-482
Number of pages20
JournalFoldtani Kozlony
Volume140
Issue number4
Publication statusPublished - 2010

Fingerprint

deflation
wind erosion
Erosion
Topography
Lakes
Sand
Earth sciences
Holocene
topography
valley
Abrasion
sand
Fans
lake
Earth science
denudation
abrasion
basin
Rocks
digital elevation model

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology
  • Palaeontology
  • Stratigraphy

Cite this

Csillag, G., Fodor, L., Sebe, K., Müller, P., Ruszkiczay-Rüdiger, Z., Edit, T. B., & Gábor, B. (2010). A szélerózió szerepe a dunántúl negyedidoszaki felszínfejlodésében. Foldtani Kozlony, 140(4), 463-482.

A szélerózió szerepe a dunántúl negyedidoszaki felszínfejlodésében. / Csillag, Gábor; Fodor, L.; Sebe, Krisztina; Müller, P.; Ruszkiczay-Rüdiger, Zsófia; Edit, Thamóné Bozsó; Gábor, Bada.

In: Foldtani Kozlony, Vol. 140, No. 4, 2010, p. 463-482.

Research output: Contribution to journalArticle

Csillag, G, Fodor, L, Sebe, K, Müller, P, Ruszkiczay-Rüdiger, Z, Edit, TB & Gábor, B 2010, 'A szélerózió szerepe a dunántúl negyedidoszaki felszínfejlodésében', Foldtani Kozlony, vol. 140, no. 4, pp. 463-482.
Csillag G, Fodor L, Sebe K, Müller P, Ruszkiczay-Rüdiger Z, Edit TB et al. A szélerózió szerepe a dunántúl negyedidoszaki felszínfejlodésében. Foldtani Kozlony. 2010;140(4):463-482.
Csillag, Gábor ; Fodor, L. ; Sebe, Krisztina ; Müller, P. ; Ruszkiczay-Rüdiger, Zsófia ; Edit, Thamóné Bozsó ; Gábor, Bada. / A szélerózió szerepe a dunántúl negyedidoszaki felszínfejlodésében. In: Foldtani Kozlony. 2010 ; Vol. 140, No. 4. pp. 463-482.
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abstract = "The role of deflation in the Pliocene-Quaternary evolution of Transdanubia (western Pannonian Basin) is one of the long-debated questions of earth sciences in Hungary. The present paper investigates the importance of wind erosion in shaping the topography of the area using data collected from existing literature, field records and digital elevation models. With respect to the morphology of the fan-shaped system of N-S to NNW-SSE striking linear ({"}meridional{"}) valleys, the basaltic buttes of the Little Hungarian Plain and of the Tapolca and K{\'a}l Basins, the deflation hollows together with the relatively abundant ventifacts in the Transdanubian Range. In other words, from the Keszthely to the V{\'e}rtes Hills and in the foreland of the Mecsek Mountains the morphology indicates the significance of deflation. Analogies from the Sahara suggest that deflation could have played an important role in the formation of the row of depressions now partly filled with shallow lakes in the south-eastern, lee-side foreland of the Transdanubian Range. Furthermore, the {"}meridional{"} ridges can be considered to be yardangs, while the valleys between them are wind channels. Naturally, during intervals with a climate similar to that in the Holocene, fluvial erosion, slope processes and, in the case of lakes, wave abrasion were also important factors in forming the present-day topography. The minimum exposure ages of wind-polished rock surfaces and OSL ages of the accumulated aeolian sands were used to date wind erosion. Chronological data indicate that in Transdanubia deflation must have caused considerable denudation in several phases at least during the last 1.5 million years and sand movement recurred as late as the early Holocene.",
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