Extent and regional deformation of the Otago peneplain

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Bishop, D.G. 1994 Extent and regional deformation of the Otago peneplain. Lower Hutt: Institute of Geological & Nuclear Sciences Institute of Geological & Nuclear Sciences science report 94/01 1 map and 10 p.

Abstract: The Otago peneplain is a mature, Late Cretaceous-Early Tertiary erosion surface that extends over some 20 000 km2 of Otago. A map of the peneplain illustrates the nature, scale, and intensity of late Cenozoic deformation. Shortening along both the northeast and northwest-trending section lines amounts to about 2.5%. The northeast-trending basin and range province covers only about a third of the area of the peneplain and is flanked by two regions with predominantly northwest-trending structures. Crustal thickness (or thinness) may control the extent of the basin and range province. (auth)