http://www.gns.cri.nz

 

http://www.niwa.cri.nz

 
 Risk management
 Prolongation of the Land Mass
 Ridges and submarine elevations
 Accretion and suturing

 

Figure 4.

The basement rocks of New Zealand consist of Paleozoic rocks of Gondwana (550–250 million year old, orange colours), intrusive igneous rocks (red) and rocks that have been accreted to the margin in the last 230 million years (yellow colours and purple).