The largest debris flow in the world, Seimareh landslide, western Iran

Landslides and debris flow are the most prevailed events in western Iran. T he largest one is Seimareh landslide. occurred in prehistoric time as the l argest in the eastern hemisphere. About 30 km(3) of material detached from the north flank of Kabirkuh anticl ine left a scarp of about 16km long and 5km wide. It seems that an earthqua ke that based on carbon-dating method occurred 10370+/-120 years BP must be the main triggering factor. The large angular bloke with the diameter of a bout 60m that has traveled on the low angle of slopes of the plain (<20 deg rees) to the distance of about 15km suggests a complex mechanism of motion in this landslide.