Latest Cretaceous c.65Ma

Latest Cretaceous map

New Zealand continent drifting from Gondwana. Rift basins in central west, possibly part of a transform system linked to sea-floor spreading. Volcanism in Westland and probable high heat flow locally. Large land areas with rift topography, but marine transgression also started. Deposition of coal measure petroleum source rocks (in green) and shoreline sandstones (potential petroleum reservoir rocks; in yellow).

The present-day 2000 m isobath, which nominally marks the periphery of the New Zealand sub-continent, is used for reference (boundary between dark blue and mid blue). Bold line depicts paleo-coastline.

Colour coding: white = terrestrial non-deposition; green = terrestrial deposition; yellow = marginal marine sand-dominated facies; pale blue-grey = shelf; mid-blue = slope or submarine rise; dark blue = deep ocean. Faults, and seafloor spreading centres shown in red. Pink circles = active volcanism.

Basins depicted include: Taranaki (TB), East Coast (ECB), Canterbury (CB), and Great South (GSB). ChP = Challenger Plateau, CP = Campbell Plateau, CR = Chatham Rise; NCB = New Caledonia Basin.

To view individual maps, click below:

Download animation of all maps deforming in sequence over 65 million years.