Basin Extent Data Sources Polygon Layer. The polygons show the provenance of information used to compile the sedimentary basins extent data layer. The 35 scientific papers and consultancy reports used are in the public domain. The quality of information used is variable, ranging from GNS Science consultancy reports based on modern high quality seismic surveys, to regional interpretations based mainly on gravity data. Clicking on an individual polygon will bring up a link to the data source. This is a reconnaissance-level map only.

PEGI (Petroleum Exploration Geoscience Initiative) well and outcrop point locations