Updated paleogeographic maps for the Taranaki Basin and surrounds

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Strogen, D.P. (comp) 2011 Updated paleogeographic maps for the Taranaki Basin and surrounds Lower Hutt, N.Z.: GNS Science. GNS Science report 2010/53 83 p.

Abstract: As part of the facies characterisation objective of the 4D Taranaki (4DT) Project, a regional reassessment of the paleogeographic evolution of the Taranaki Basin and surrounding areas has produced a set of 31 maps spanning the Late Cretaceous to present day, which expands on those from previous studies and incorporate significant new data. These maps capture the most important aspects of the tectonic and sedimentary evolution of the Taranaki Basin, and form the basis for ongoing detailed paleofacies mapping and basin modelling studies. Inputs for maps include: compilation of paleogeographic maps from previous studies; a new compilation of biostratigraphic and bathymetric data from >200 wells in and around the Taranaki Basin; compilation of information from outcrops surrounding the basin, both from literature and QMAP data, and new paleofacies data from seismic stratigraphy and attribute analysis. The aim is to provide at least one paleogeographic reconstruction for each depositional unit bounded by mapped seismic reflectors and, where possible, construct additional maps to capture major changes in facies or paleobathymetry within sequences. The maps are constructed in ArcGIS and the data that form the maps are stored in a number of geodatabases. This allows the capture of significant metadata relating to map features such as wells, faults, paleofacies and paleobathymetry. Each of the paleogeographic maps is presented in turn and a brief summary of the basin evolution is given, as are relevant data sources. An extensive bibliography is presented for the data sources used to construct the maps. (auth)