1-1-1-1-1-1-1-1-1-1-1-1-1-1 From: "McLeod, Oliver (Student)" <oem3@xxxxxxxxxxxxxxxxxxxxxx> *NEW MAP PUBLICATION FROM THE GEOSCIENCE SOCIETY OF NEW ZEALAND* *Geology of Karioi Volcano, Aotearoa New Zealand* *Authors: Oliver E. McLeod, Roger M. Briggs, Chris E. Conway, Osamu Ishizuka* The ancient maunga Karioi (756 m) sits cloaked in bush on the rugged west coast of Aotearoa, New Zealand. Slowly chiselled by waves since the last interglacial, this eroded volcanic landscape contains an unparalleled geological record of lava flows, ash falls, cone growth and collapse events from throughout the life of a stratovolcano. Karioi lies at the northwest tip of the Alexandra Volcanic Group, a chain of extinct basaltic stratovolcanoes, domes and smaller vents formed about 2.5 million years ago above a tear in the subducted Pacific Plate. Because of this unusual tectonic setting, Karioi is one of only a few volcanoes on Earth where arc- and intraplate-type basaltic magmas were erupted together from the same volcanic system. This study presents the first detailed geological map of Karioi volcano and the nearby Okete volcanics based on the results of 30 years of field surveys, recent aeromagnetic datasets and new radiometric ages. The geological information is displayed at 1:25,000 scale on a high resolution, hill-shaded basemap created with LiDAR. The companion text provides notes on stratigraphy, eruption history, local tectonics, and places Karioi into the wider volcanic context of Aotearoa and the Pacific Ring of Fire. These descriptions are accompanied by landscape and outcrop photographs, map plates and geological sketches. *Available for international order from the Geoscience Society of New Zealand website:* *https://gsnz.org.nz/publications-and-webstore/product/173 <https://urldefense.com/v3/__https://gsnz.org.nz/publications-and-webstore/product/173__;!!IKRxdwAv5BmarQ!bOwqG8hgXry8xwQxXcX7wVq4Dx2GtSg5w661PZWo20SQ0bDEJWWIvFmJmoWu4GK-x9PSQ5bpE9n7JjsrI8hY29l8rQ$>* *Individual folded/rolled copies of the map also available on request Year: 2024 Format: Softcover and A0 1:25,000 map in sleeve Series: GSNZ Miscellaneous Publication Series volume: 165 ISBN: 978-0-473-70884-9 1-1-1-1-1-1-1-1-1-1-1-1-1-1 ------------------------------
