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Paper Information

Journal:   MODARRES HUMAN SCIENCES   SPRING 2004 , Volume 8 , Number 1 (TOME 32); Page(s) 45 To 70.
 
Paper: 

GEMORPHOLOGIC EVIDENCES ON DATING THE GREAT SEIMAREH (KABIR-KUH) LANDSLIDE, ZAGROS, SOUTHWEST OF IRAN

 
 
Author(s):  SHAYAN S.*
 
* Tehran-Iran
 
Abstract: 
The Seimareh grand landslide is one of the great landslides on the earth that attracted ‎many Iranian and foreign scholars the of there are some different opinions on the ‎causes and date of the landslide‏.‏‎
‎ In this article, while investigating situational conditions and some dynamical and ‎geomorphologic characteristics of the landslide, some theories about the causes and ‎date of the occurrence of the landslide, were rendered and put in to examination‏.‏ By using hydro-climatic data and dynamical calculations of the grand landslide, some ‎general and detailed characteristics of it were presented. By using geomorphologic ‎evidences, it seems that the date of the occurrence of the landslide is not the predicted ‎date‏.‏‎
‎ The evidences are such as the extension rate of surface drainage network on low layer ‎or surface of landslide, how regolith develops, the accomplishment rate of solution ‎processes (making lapies, joints, and cracks in limestones of the area) roughness of ‎debris of landslide, the rate of soil horizons development, and limitation of new ‎fluvial deposition‏.‏‎
‎ After scrutinizing historical documents, the landslide dated was recognized in 872 ‎A.D. and the occurrence theories based on the date, around 10000 years B.P., were ‎rejected. The Seimareh landslide produced an enormous sound which caused land- ‎shake and was heard at the region and further areas. Some scholars take an earthquake ‎as the trigger factor, but the article says that the situation was vice-versa‏.‏
 
Keyword(s): SAIMAREH LANDSLIDE (KABIR- KUH), GEOMORPHOLOGIC DATING, ZAGROS LANDSLIDES, MASS MOVEMENTS, APPLIED GEOMORPHOLOGY.
 
References: 
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