Fault Mapping Studies (ECan)
A programme of active fault trace and fault avoidance zonation mapping for land use planning is currently underway for all districts within Canterbury (except for Christchurch City, which has no known active fault traces at the ground surface). So far mapping has been completed for Ashburton District (2009) and Mackenzie District, including detailed fault avoidance zoning of the Ostler Fault at Twizel (2010). Fault avoidance zone mapping of the Greendale Fault was also undertaken after the September 2010 Darfield (Canterbury) earthquake to assist with redevelopment on and adjacent to the fault trace. See Collection Overview for background and usage information.