On the long-term preservation of geomorphological traces of ancient seismic catastrophes

Abstract

Within the pleistoseismal zone of well-known Kebin earthquake (1911, M=8.2, northern Tien Shan) geomorphic evidences of more ancient catastrophes were found. These ancient seismodislocations are dated Holocene, Late Pleistocene and even late of Middle Pleistocene by geological-geomoiphological correlation method. This confirms and concretizes well-known thesis that seismogenic zones are steady and paleoseismodislocations are long-lived.