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Geneza form ostańcowych - wschodnie obrzeżenie szottu Dżerid

100%

Dubis L. , Dluzewski M.

Prace i Studia Geograficzne

2006

tom 37

The aim of the research was to describe origin of aeolian residual hills located in the eastern part of the Chott Jerid. Two areas were selected to the research, first in a vicinity of Bechri (within the Pliopleistocene range of the chott), second 10km north of El Faouar (within the Holoce floor of the Chott). Morphometry of the forms and analysis of prevailing wind directions in the first research area proved, that the hills are erosion residual hills and can be called yardangs. Aeolian erosion as a shaping factor is questioned in the second research area, because of lack of longest axis of the forms as well as lack of the yardang-like shapes. It is put forward that the forms in the second research area originated mainly from salt weathering (exudation). Analysis of internal structure of the forms showed that the sediments were accumulated in aeolian environment. In the case of the first research area the accumulation produced barchans and barchanoidal dunes while in the second researched area – longitudinal dunes (seif-dunes). Textural features of the sediments building the residual hills, particularly medium sorting (σ₁= 0,6-0,8) and dominant share of gypsum (60-80%) which is not resistant to mechanical abrasion, show that aeolian transport was short and the material source was quite near. The researched residual hills are of different age. The forms in the vicinity of Bechri were created during the 20th c. TL dating of the material constituting the hills near El Faouar shows that accumulation of the material took place over 30 ka BP.

Landscape evaluation of the Dniester Valley - the area of The Great Dniester Marshes

80%

Morawska M. , Dubis L. , Nesteruk J.

Annals of Warsaw Agricultural University. Horticulture

2001

tom 22

Rzeźba i współczesne procesy morfogenetyczne wysokogórskiego masywu Świdowca (Karpaty Wschodnie, Ukraina)

70%

Klapyta P. , Dubis L. , Krzemien K. , Gorczyca E. , Kraz P.

Roczniki Bieszczadzkie

2020

tom 28