Aggregate opportunity modelling for New Zealand
Map
Efficient use of New Zealand’s aggregate resources is critical to supporting infrastructure development as well as reducing operational and transport costs related to extraction of the raw materials. A mineral potential modelling approach was used to identify places with opportunity for future hard rock and gravel extraction across New Zealand.
Geographic information system (GIS) software was used to build a spatial model of the critical components of aggregate opportunity using digital geological, land-use, statistical and geographic data. Model components included source rocks, land use, future demand, supporting infrastructure and cultural sensitivity in 23 mappable criteria layers. These were combined using the fuzzy logic expert-weighted spatial modelling technique to qualitatively rank aggregate resource opportunities at a national scale.
This appendix contains the resulting maps and their GIS-based equivalent datasets of gravel and hard rock aggregate opportunity. This information can be used to manage aggregate resources, generate targets for exploration activities and provide insight into future resources.
Cite as: Hill MP. 2020. Aggregate opportunity modelling for New Zealand [digital appendix]. Lower Hutt (NZ): GNS Science. https://doi.org/10.21420/DQKB-ET09
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Locations
- Te Whanga-nui-a-Tara / Wellington
- Murihiku / Southland
- Ōtepoti / Dunedin
- Ōtākou / Otago
- Ōtautahi / Christchurch
- Waitaha / Canterbury
- Kaikōura
- Te Tai Poutini / West Coast
- Te Tauihu-o-te-waka/ Marlborough
- Whakatū / Nelson
- Te Tai-o-Aorere / Tasman
- Aotearoa / New Zealand
- Manawatū-Whanganui
- Central Plateau
- Taranaki
- Te Matau-a-Māui / Hawke's Bay
- Te Tai Rāwhiti / Gisborne
- Te Moana-a-Toi / Bay of Plenty
- Waikato
- Tāmaki Makaurau / Auckland
- Te Tai Tokerau / Northland