Geyserland : a guide to the volcanoes and geothermal areas of Rotorua

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Houghton, B.F.; Scott, B.J. 2002 Geyserland : a guide to the volcanoes and geothermal areas of Rotorua. [Wellington]: Geological Society of New Zealand. Geological Society of New Zealand guidebook 13. 48 p.

Abstract: The city of Rotorua, in the centre of the North Island of New Zealand, lies in the heart of a region famous for its scenic beauty. It is equally appealing to earth scientists because of its diversity of geothermal and volcanic features. The city occupies the southern shoreline of Lake Rotorua, and both lake and city lie within a circular basin inferred to be a large volcanic crater (or caldera) that formed about 220000 years ago. Since then, the district has been shaped by smaller violent, frequent volcanic eruptions both from within the basin, and more importantly, from the neighbouring volcanoes of Tarawera and Haroharo. Lava flows and domes, layers of pumice ash, geyser cones, mud pools, and silica terraces record this eventful history. The Rotorua basin is a very young volcano by world standards, so many of its superb landforms are unmodified by erosion and are textbook examples of volcanic and thermal activity. Some of the world’s most spectacular volcanic features lie within an hour’s travel of Rotorua City. (auth)

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