Whole-rock geochemical reference data for Torlesse and Waipapa terranes, North Island, New Zealand

Abstract

Sixteen metasedimentary rocks from the Waipapa and Torlesse composite terranes of New Zealands North Island have been analysed for major and trace elements and Sr, Nd and Pb isotope composition. The new data provide a comprehensive analytical dataset that can be used for quantitative trace element and isotopic modelling of the petrogenesis of Neogene North Island volcanic rocks. The major and trace element and isotope data confirm previously recognised systematic compositional differences between Waipapa and older Torlesse (Kaweka Terrane) metasedimentary rocks. Kaweka Terrane samples tend to have higher SiO2, Al2O3, Cs, Rb, Th, U, Hf and total rare earth elements (REE) abundances and chondr..