Effects of earthquakes on railways, Wanganui

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Riddolls, B.W. 1972 Effects of earthquakes on railways, Wanganui. Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report EG 131 5 p.

Abstract: Wanganui lies within the main seismic region of New Zealand, and its railway system is likely to suffer considerable damage in the event of strong shallow earthquake. Because earthquake intensities commonly vary in relation to geological factors, the microzoning of these factors is important to predict areas where the greatest damage seems likely to occur. It is probable that the railway from Wanganui to New Plymouth north of Aramoho Junction will be disrupted by failure of steep cuttings in weak siltstone and soft sand. The thick succession of fine grained alluvium along the Wanganui River will behave unfavorably, and all railway facilities situated on this level ground will be severely damaged. (auth)