Formation mechanism of Jaber plain's dolines, south east of Ilam province

Author

Faculty of Agriculture, Ilam University, Ilam, Iran

Abstract

Sinkholes (dolines) are inspected in different parts of the world from different points of view, especially enginnering geology aspects. In this study, the formation mechanism of large number of sinkholes occurred in the Jaber Plain of Ilam Province was inspected mainly for engineering considerations. The sinkholes are formed in Gachsaran formation or in the alluviums which cover the formation. The location and morphometric characteristics of the sinkholes were determined in the field and the collected data was analysed. Interperetation of the data showed that these sinkholes are mainly categorized as collapsed sinkholes. Zamzam well, the bigest containing water sinkhole of the area, geomorphologically is named “natural groundwater piezometer”; because the water level fluctuation inside this sinkhole coincides with the ground water level variation. from the engineering point of view, the karst of Jaber plain is classified as mature karst (class III).
 

Keywords

References

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Advanced Applied Geology
Volume 1, Issue 2 - Serial Number 2
January 2012
Pages 125-139

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