Search for fault-line rupture continues

10:14 am on 8 April 2011

Geologists are continuing to examine the outskirts of Christchurch for geological evidence of a fault that ruptured in the February earthquake.

The earthquake on 4 September ripped the ground apart in Darfield, there still haven't been any physical signs of the fault that ruptured in February.


Canterbury University geologist Mark Quigley says it appears parts of the Port Hills have lifted 30 to 40 centimetres, relative to the nearby suburb of Opawa.

He says the best geological evidence he has found so far is signs of possible coastal uplift at the Ferrymead Bridge.

Dr Quigleysays finding a ground rupture would answer questions that computer modelling can not.

For example, he says, the depth of the fault rupture will remain unknown if no evidence is found on the land.