Fault movements and deformation on the Wellington Fault in the Wellington Region

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Grant-Taylor, T.L. 1967 Fault movements and deformation on the Wellington Fault in the Wellington Region. Lower Hutt: New Zealand Geological Survey. Report NZGS 27 14 p.

Abstract: The processes that formed the area surrounding Wellington include intense faulting. The advantages of Wellington Harbour are so great that there is no argument for the abandonment of the city, however, our partnership with forces beyond our control makes it necessary that we take notice of them if we are to live and work with profit and security. This report outlines the evidence available and the conclusions drawn, and suggests methods of increasing our knowledge of position and behaviour of the faults that most directly concern the city. The deformation pattern is outlined. It is one of dominant horizontal displacement together with vertical deformation producing a pattern of synclines and anticlines. An estimate of about 1000 years as the periodicity of fault movement is given. The position of the plane movement is known accurately in an number of areas and a method of establishing the position to compare accuracy is suggested for a few other critical areas. The methods of establishing current deformation result form studies in other parts of the world, and have been adapted to the setting established by the recent geological history of Wellington. (auth/ARC)