Volume 12, Issue 44 (summer 2008)
2008, 12(44): 137-151 |
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Toomanian N, Khademi H, Jalalian A. Evolution of Zayandeh-rud Valley. Journal of Crop Production and Processing 2008; 12 (44) :137-151
URL: http://jcpp.iut.ac.ir/article-1-875-en.html
URL: http://jcpp.iut.ac.ir/article-1-875-en.html
Abstract: (18632 Views)
Determination of landscape evolution is useful to well understand the physical environment and it also enables us to conduct the soil related studies. The objective of this study was to establish the historic evolution of Zayandeh-rud Valley from late Tertiary to Quaternary. To achieve this objective, the spatial structure of a representative area of Zayandeh-rud Valley in three dimensions was examined. Responsible geologic and geomorphic processes of landscape formation were determined and inherited records and evidences of changes in soil development were investigated. The inherited foot marks and different analyses proved that following the Zayandeh-rud River formation, from Miocene to present time, the following processes and events have occurred during valley formation pathway: 1- formation of old gypsiferous gravelly alluviums, 2- lagoon formation, the change in the river pathway, 3- playa formation, 4- river terrace deposition and 5- starting of wind erosion.
Keywords: Zayandeh-rud Valley evolution, Landscape formation, Geomorphic processes, Playa formation.
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