Geology of proposed tunnel routes NIMTR, Plimmerton-Paekakariki

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Riddolls, B.W. 1974 Geology of proposed tunnel routes NIMTR, Plimmerton-Paekakariki. Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report EG 206 3 p.

Abstract: The New Zealand railways is investigating three alternative routes to upgrade the main trunk line between Plimmerton and Paekakariki. Extensive tunneling is envisaged. This report discusses present knowledge of geological conditions that are relevant to the proposed alignments. Data have been provided by Wellington District Office and Earth Deformation Section, N.Z. Geological Survey. Detailed investigations have not been carried out, but are essential before selection of a final route is made. (auth)