Geological process or phenomenon that may cause loss of life, injury or other health impacts, property damage, loss of livelihoods and services, social and economic disruption, or environmental damage. Comment: Geological hazards include internal earth processes, such as earthquakes, volcanic activity and emissions, and related geophysical processe [..]

Extreme natural events in the crust of the earth that pose a threat to life and property. Earthquakes, volcanic eruptions, landslides, and tsunamis (tidal waves) are examples of geological hazards.