LOW GRADE METAMORPHIC studY to PRECISE the geodynamic history and hydrocarbon migration system of THE HIKURANGI PRISM (north island, new zealand)

International audienceThe Hikurangi subduction wedge has undergone several deformation episodes periods mainly related to subduction processes, and leading to complex stratigraphic and structural patterns: i) Initial formation of an accretionary complex on the eastern Australian margin during Triassic, Jurassic, and Early Cretaceous times; ii) a stage of tectonic quiescence during Late Cretaceous to Oligocene times; iii) and the renewal of westward subduction beneath North Island since the Early Miocene to present day. The onland exposure of Neogene trench slope basins together with their Jurassic to late Paleogene pre-subduction series permits to provide a high-resolution sampling grid including all lithostratigraphic units