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Resource Geological Mapping

There are many parts of New Zealand where we draw resources from our underlying rocks. These resources may be minerals, aggregate materials or groundwater amongst others. We are making new geological maps of these resource-rich areas to assist explorers and extractors of these resources. Data from regional airborne geophysical surveys flown within the past decade across New Zealand are transforming geological knowledge, particularly in areas of dense vegetation, areas of poor outcrop, remote location and highly deformed rocks.

Geology of the Middlemarch area (GNSGM5)

thumbnail image for the Geological Map of the Middlemarch area in East Otago

Middlemarch map available for download as a PDF.

The Middlemarch area in East Otago has high prospectivity for orogenic gold deposits. It is adjacent to the world-class, actively mined Macraes gold (± tungsten) deposit, contains two sites of historically important gold mining (Nenthorn and Barewood goldfields), and has gold (± tungsten ± antimony), groundwater, diatomite and aggregate resource potential. The map is available free as a pdf from the GNS Shop and the dataset is available for purchase as feature classes in ESRI file geodatabase and shapefile GIS formats and freely consumable Web Map Services and Web Feature Services from GeoServer and ArcGIS Server. GIS layerfiles that reference the web services will be available for use in ArcGIS and QGIS soon.

Geology of the Victoria Range area (GNSGM6)

thumbnail image for the Geological Map of the Victoria Range

Victoria Range map available for download as a PDF.

Plutonic rocks of the Victoria Range segment of the Karamea Batholith are the focus of this map. The Victoria Range area occurs within the Western Province of the Austral Superprovince, apart from the southeastern corner of the map where Eastern Province metasedimentary rocks are juxtaposed by the Alpine fault. Country rocks to the Karamea Batholith in this area are low grade metasedimentary rocks of the Greenland Group (Buller Terrane), locally contact metamorphosed. Within the batholith, sillimanite garnet-grade metasedimentary rocks of the Victoria Paragneiss are likely metamorphosed Greenland Group. Isolated plutons intrude Takaka Terrane in the southeast of the map area. The map is available as a pdf free from the GNS Shop. The data are freely consumable as Web Map Services and Web Feature Services from GeoServer and ArcGIS Server. GIS layerfiles that reference the web services will be available for use in ArcGIS and QGIS soon.