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RESEARCH PRODUCT
Non-explosive, dome-forming eruptions at Mt. Taranaki, New Zealand
Vincent E. NeallJonathan ProcterShane J. CroninThomas PlatzThomas PlatzStephen F. Foleysubject
geographyLateral eruptiongeography.geographical_feature_categoryResurgent domeGeochemistryLava domeengineering.materialDome (geology)VolcanoMagmaengineeringStratovolcanoGeologySeismologyEarth-Surface ProcessesHornblendedescription
Abstract Volcanic domes may be emplaced rapidly and with few hazardous consequences, even at the summit of large stratovolcanoes. In this study the most recent activity of Mt. Taranaki in New Zealand is shown to have been a passive effusion of a c. 5.9 million m3 lava dome with minor associated explosions and little syn-eruptive hazard. This event, the Sisters eruption, appears to have been unrecorded by local indigenous populations but likely occurred between A.D. 1785 and 1820. The magma erupted is chemically distinct from the preceding A.D. 1755 Tahurangi eruption. Based on breakdown of hornblende crystal rims, the Sisters magma was probably only four days outside the hornblende stability field before cooling, and the magma ascended its last four km along a conduit at rates of 0.012 ms− 1. Based on dome surface morphology, a relatively low-viscosity magma is inferred. The dome remained in a metastable state for up to 70 years following the eruption; eventually generating a large, cool (
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-01-01 | Geomorphology |