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Abstract
We propose the new name Waipa Supergroup for a regionally extensive Late Jurassic (to probable Early Cretaceous) stratigraphic unit in the central North Island of New Zealand. Waipa Supergroup is present on both sides of the Waipa Fault and includes Apotu and Huriwai Groups (formerly of Murihiku Terrane), Manaia Hill Group (formerly Waipapa Terrane), and rocks of the Waioeka petrofacies (formerly Torlesse Terrane). Although depositional setting, metamorphic grade, and style of deformation vary from east to west, distinguishing features of Waipa Supergroup include its age, volcaniclastic‐dominated petrofacies, conglomerates, indications of reworking, presence of Belemnopsis aucklandica, and absence of basalt‐chert‐limestone associations. In a regional tectonic context, the Waipa Supergroup is a Late Jurassic overlap assemblage that rests on older, deformed and mutually amalgamated Murihiku, Maitai, Caples, and Rakaia Terranes in the North Island. Waipa Supergroup sandstones were deposited in forearc, slope, and trench settings and may have been sourced from the magmatic arc represented by the Median Batholith.
Notes
34 West End, Ohope, Whakatane, New Zealand.
Institute of Geological & Nuclear Sciences, Private Bag 1930, Dunedin, New Zealand.
Author for correspondence.
