Hicks, S.R. 1980 Basement structure relevant to the oil search in the Dannevirke region. [s.l.]: [s.n.]. Report / Geophysics Division 172 16 p.
Abstract: Petroleum prospects in the Dannevirke region have been re-examined in the light of recently published interpretation of basement structures from gravity surveys. In the eastern part of the Dannevirke region, the major structural feature on the surface is the Akitio syncline, which structurally is not very promising as an oil reservoir; however, the Akitio syncline axis is almost collinear with the axis of a major anticlinal ridge in the Upper Cretaceous and basement rocks. A smaller anticlinal ridge in the Cretaceous and basement rocks exists near Waipururau. Further examination is needed to determine whether these structures form significant oil reservoirs, but it is suggested that the chances of a commercial onshore oil strike in the Upper Cretaceous rocks of the eastern Dannevirke region are greater than previous work indicates. (auth)