公元856年伊朗达姆甘地震

The Damghan earthquake of 856 struck the Qumis region of northern Iran with magnitude 7.9, killing an estimated 200,000 people and reaching Mercalli intensity X. Its rupture lay in the deforming belt where the Arabian plate drives northward against Eurasia, a collision that has repeatedly generated destructive shocks across the Iranian plateau. The disaster destroyed a corridor of settlements along the ancient trade routes south of the Alborz Mountains. It ranks among the deadliest earthquakes of the early medieval world and remains one of the most severe seismic events documented in Iran's long history.

公元856年，伊朗达姆甘、库米斯：M7.9地震，震源深度不详。造成约20万人死亡。位于阿拉伯板块与欧亚板块的汇聚带。