Hurunui River power development seismic survey no. 1: Sisters Stream junction

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Hicks, S.R. 1975 Hurunui River power development seismic survey no. 1: Sisters Stream junction. [s.l.]: [s.n.]. Report / Geophysics Division 104 8 p.

Abstract: A seismic refraction survey was conducted at the junction of the Hurunui River and the Sisters Stream. Greywacke basement rocks of seismic P-wave velocity 3.5 km/s were detected and mapped; their depths vary from ground level to more than 70 metres below ground level. The overlying gravels are divided into two main groups, typified by P-wave velocities of 0.8 km/s and 1.8 km/s. Further subdivision is possible in some places (auth.)