Briggs, R. M., Lowe, D. J., Goles, G. G., & Shepherd, T. G. (1994). Intra-conference Tour Day 1: Hamilton–Raglan–Hamilton. In D. Lowe (Ed.), Conference Tour Guides, International Inter-INQUA Field Conference and Workshop on Tephrochronology, Loess, and Paleopedology (pp. 24–44). University of Waikato.
Abstract
Today's trip to the Raglan district, western North Island, is primarily an introduction to (1) the Alexandra Volcanics, a group of chiefly basaltic deposits of Plio-Pleistocene age, and (2) the Kauroa and Hamilton Ash formations, two groups of weathered, predominantly rhyolitic, tephra beds of Plio-Pleistocene age that, in places, are intercalated with Alexandra Volcanics. Buried paleosols are associated with both the Alexandra and Kauroa/Hamilton deposits. We plan on spending around half the day at one site - Stop 5 - on the Karioi edifice on the west coast, just south of Raglan (Figs. 1.1, 1.5). Here we will examine, in a relaxed and informal manner, outcrops in and near Te Toto amphitheatre and gorge, a critical locality for understanding the stratigraphic succession and petrologic evolution of Karioi (see Fig. 1.9 below).
