NZL GNS 250K calderas (4th edition)

This dataset represents the calderas present at or near the surface and comprises arcs with attributes describing the accuracy of location and name. The dataset is part of the Geological Map of New Zealand (Mainland) collection produced by GNS Science. The mapping frame within which the features have been observed is defined as the top of bedrock (i.e. the solid rock that may either be exposed at the topographic surface or covered by unconsolidated deposits). The data structure complies with the GeoSciML 4.1 standard, where relevant, and uses the appropriate CGI Controlled Vocabularies. This dataset forms part of Heron, D.W. (custodian) 2023: Geological Map of New Zealand 1:250 000 (4th ed.) [digital data]. Lower Hutt (NZ): GNS Science. (GNS Science geological map; 1). For more information on data, distribution options and formats visit https://doi.org/10.21420/5XTJ-5718?x=y. To obtain the data visit https://doi.org/10.21420/8BEH-6P24.