This is a rather amazing clip of liquefaction of sediments…

This is a rather amazing clip of liquefaction of sediments…

This is a rather amazing clip of liquefaction of sediments during the Mexico Earthquake on Tuesday. When shaken, water-saturated sediments lose all their strength and will start flowing. Mexico City is built on exactly these kind of sediments. Here you can actually see big slabs of concrete, part of a sidewalk, moving up and down as water flows beneath them in sediments that used to support the sidewalk’s weight.