R. Sutherland et al., AGE OF JACKSON FORMATION PROVES LATE CENOZOIC ALLOCHTHONY IN SOUTH WESTLAND, NEW-ZEALAND, New Zealand Journal of Geology and Geophysics, 39(4), 1996, pp. 559-563
Analysis of radiolarians, foraminifera, dinoflagellates, and pollen fr
om Jackson Formation, South Westland, yields Middle Eocene to Late Oli
gocene ages. The samples analysed are older than underlying Tititira F
ormation (middle Miocene) and thus provide firm evidence that Jackson
Formation is allochthonous. Jackson Formation sediments are age correl
ative with Abbey Formation and Awarua Limestone found nearby in South
Westland.