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Regional Geological Mapping

Image - GNS Science

Aeromagnetic image of Wairakei

Regional geological mapping refers to more general scales ranging from 1:50 000 to 1:10 000 000. The QMAP 1:250 000 Geological Map of New Zealand, completed in 2012, is a regional scale geological map series covering the country but there are good reasons to undertake more detailed geological mapping of some areas.

Resource Geological Mapping
Geological maps provide important information in areas of proven or potential geological resources such as minerals, coal, petroleum, groundwater and geothermal energy. New geological mapping is underway in the Otago, West Coast and Northland resource areas where high quality airborne geophysics datasets have become available. The maps assist with making decisions around resource exploration and management.

Image - GNS Science

Mt Ruapehu, Southern slopes

Volcano Geological Mapping
Towards the conclusion of the QMAP project, it became apparent that a new detailed geological map of Tongariro National Park, and a more volcanic-focussed geological map of the Taupo Volcanic Zone, would be important contributions to understanding volcanic eruptive activity in the central North Island. The Tongariro National Park geological map was published in 2017 and reveals a complex interplay between competing process of glacial erosion and volcano growth on Mt Ruapehu and the other centres.