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Images, UC QuakeStudies

A 'sand volcano' of liquefaction silt in Bexley. The photographer comments, "Liquefaction is just a mixture of sand and water squeezed up from the ground, but with a little imagination it has a beauty in its untouched state".

Images, UC QuakeStudies

A large pile of liquefaction silt in Parklands has been topped with a Christmas star. The photographer comments, "Not exactly the kind of sand castle you want to build on your Summer holidays. This is the biggest of several piles of liquefaction in just one street in Parklands/Queenspark".

Images, UC QuakeStudies

Dried liquefaction silt in North New Brighton. The photographer comments, "I found this face amongst the liquefaction. It is like one of them diagrams where they segment different parts of the brain depending on their functions".

Images, UC QuakeStudies

Dried liquefaction silt in North New Brighton. The photographer comments, "This is the result of liquefaction which spewed out after the double earthquake in Christchurch. Having flowed into a shallow depression that was deep enough for a fair quantity of the silty liquid to settle and separate: the heavy sand below and a talcum powder like substance on top. Some of these are so delicate that a mouse crossing them would probably crack them. Here the sun has dried them out and they have contracted and curled up towards their centres".