Before revision: Earthquake environmental effects are divided into two main types: thumbnail|Coseismic surface faulting induced by the 1915 Fucino, Central Italy, earthquake Primary effects: which are the surface expression of the seismogenic source (e.g., surface faulting), normally observed for crustal earthquakes above a given magnitude threshold (typically =5.5–6.0); thumbnail|Coseismic liquefaction induced by one of the 2012 Emilia, Northern Italy, earthquakes 2.
After revision: Earthquake environmental effects are divided into two main types: thumbnail|Coseismic surface faulting induced by the 1915 Fucino, Central Italy, earthquake Primary effects: which are the surface expression of the seismogenic source (e.g., surface faulting), normally observed for crustal earthquakes above a given magnitude threshold (typically =5.5–6.0); thumbnail|Coseismic liquefaction induced by one of the 2012 Emilia, Northern Italy, earthquakes