Determining rock surface micro-roughness and search for new method of relative dating of glacial landforms : a case study from Fláajökull (SE Iceland) and Biferten glacier (Swiss Alps) forefields

• Autorzy: Dąbski M.
• Języki publikacji: EN

Abstrakty

EN

Micro-roughness was recorded on glacially abraded stones deposited since Little Ice Age by two glaciers: Fláajökull in SE Iceland (basalts) and Biferten glacier in Swiss Alps (limestones) in order to find indices of relative age of the glacial landforms. Micro-roughness of rock surfaces was analysed with use of Handysurf E35-B electronic profilometer which calculates following roughness parameters: Rz, Rzmax, Ra and Rsm. An increase in roughness parameters towards older moraines is observed in both forefields, however the change is more significant on limestone surfaces. Time-dependent surface deterioration is visible only within first decades of weathering of both types of rock, and further weathering does not cause increase in micro-roughness.

Słowa kluczowe

EN

microroughness; proglacial weathering; Fláajökull; Iceland; Biferten glacier; Swiss Alps

• Wydawca: Stowarzyszenie Geomorfologów Polskich
• Czasopismo: Landform Analysis
• Rocznik: 2012
• Tom: Vol. 21
• Strony: 3--8
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Dąbski M.

• Department of Geomorphology, Faculty of Geography and Regional Studies, University of Warsaw, Poland,

Bibliografia

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