Volume 18, Issue 47 (No.1&2-صفحات انگلیسی از 171 تا 186 2007)
2007, 18(47): 709-723 |
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The inherent sensitivity of geological formations to erosion and weathering in basins of microcontinental plate of central Iran. Journal title 2007; 18 (47) :709-723
URL: http://jsci.khu.ac.ir/article-1-1194-en.html
URL: http://jsci.khu.ac.ir/article-1-1194-en.html
Abstract: (5933 Views)
One of the most important subjects of watershed basins is the protection of soil and water resources with regarding to control of erosion and sediment yield. The empirical methods for estimation of erosion rates and sediment yield measures such as PSIAC and EPM more emphasize environmental factors so mach so that the important lithological agents are not considered. Therefore, in this research attempts are made to propose a suitable and comprehensive method for inherent sensitivity of lithological units. To this end rock units are classified based on mineralogical composition and their textures in 10 orders of erodibility. The order of erodibility of each formation will be hased on average of lithological components. This method is used for microcontinental plate of central Iran to evaluate the model. Based on outcomes of the mentioned classification, more than 83 percents of rock units are classified from moderate- weak to totally loose and sensitive order. In average, the basin is categorized as very sensitive to erosion. With regarding to obtained results in comparison to specific sediment yield rate that obtained from statistical analysis of observed measures, the accuracy and the ability of the method is confirmed.
Keywords: Erosion, Geological Formation, Inherent, Characteristics, central Iran, Kavir-e-Lout Basin, Specific sediment yield
Published: 2007/04/15
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