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• W4224212018 endingPage "107555" @default.
• W4224212018 startingPage "107555" @default.
• W4224212018 abstract "Multistage collapse caldera create complex geological structures that are often buried by kilometers of pyroclastic infill and late stage lava domes, making study of their origins difficult from outcrop alone. Here we present new gravity and aeromagnetic data compilations derived from terrestrial, lake and airborne surveys to investigate the buried internal structure of the Okataina Volcanic Centre (OVC) and interpret its stages of development. Magnetic highs (1300 nT) are caused by a combination of thick lava flows and domes that infill the collapse structures, and a deeper feeder structure/dyke complex that extends below the basement to at least 6 km depth. Magnetic lows caused by hydrothermal alteration are associated with topographically low areas near the topographic and structural collapse margins suggesting fluid circulation within the caldera exploits both deep and shallow structures. Several large rhyolite lava flows contain low magnetisation rims reflecting the glassy outer carapace and crystalline core. The gravity data show a − 62 mGal residual gravity low associated with the OVC, with the steepest gradients occurring inside the topographic margins. The gradient of the gravity low is stepped towards its lowest point near the outlet of Lake Tarawera. Each step is interpreted as relating to the buried structural collapse margins of the Utu, Matahina, Rotoiti and possibly Kawerau, catastrophic caldera forming eruptions, creating an overlapping and nested caldera structure, however there is no evidence for an OVC encircling ring structure. Buried caldera margins associated with oldest Utu eruption may play a role in the location of the youngest Tarawera eruptions. We propose smaller amplitude gravity lows that extend outside the topographic margins of the caldera are related to lateral magma migration to the south-west, exploiting regional tectonic stress regimes, towards eruption vents within the caldera. 3D gravity inversion, including models numerically constrained by a 3D magnetotelluric model, suggest a caldera depth of 5000 ± 500 m that accumulated over multiple collapse episodes along with rifting induced subsidence in the past 550 ka. Our multiphysics approach to investigating caldera structure has revealed buried structural margins and their relationships to eruptive vents and hydrothermal features at the OVC. Detailed geophysical models of caldera structure are rare globally, and our findings are consistent with analogue and numerical models of caldera formation that accompanies the most violent volcanic eruptions on Earth." @default.
• W4224212018 created "2022-04-26" @default.
• W4224212018 creator A5013869845 @default.
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• W4224212018 creator A5083169225 @default.
• W4224212018 creator A5087563308 @default.
• W4224212018 creator A5091266626 @default.
• W4224212018 date "2022-07-01" @default.
• W4224212018 modified "2023-09-24" @default.
• W4224212018 title "The integrated history of repeated caldera formation and infill at the Okataina Volcanic Centre: Insights from 3D gravity and magnetic models" @default.
• W4224212018 cites W1506917147 @default.
• W4224212018 cites W1618474555 @default.
• W4224212018 cites W1790833911 @default.
• W4224212018 cites W1931279099 @default.
• W4224212018 cites W1964703171 @default.
• W4224212018 cites W1969182989 @default.
• W4224212018 cites W1970279629 @default.
• W4224212018 cites W1970334697 @default.
• W4224212018 cites W1971523579 @default.
• W4224212018 cites W1974291054 @default.
• W4224212018 cites W1975328690 @default.
• W4224212018 cites W1983093835 @default.
• W4224212018 cites W1988021274 @default.
• W4224212018 cites W1991962392 @default.
• W4224212018 cites W1996321008 @default.
• W4224212018 cites W1996332351 @default.
• W4224212018 cites W1999757037 @default.
• W4224212018 cites W2001680486 @default.
• W4224212018 cites W2003348849 @default.
• W4224212018 cites W2007391735 @default.
• W4224212018 cites W2011301426 @default.
• W4224212018 cites W2011746009 @default.
• W4224212018 cites W2013103456 @default.
• W4224212018 cites W2015159529 @default.
• W4224212018 cites W2017542501 @default.
• W4224212018 cites W2019192079 @default.
• W4224212018 cites W2019904609 @default.
• W4224212018 cites W2024419650 @default.
• W4224212018 cites W2025311648 @default.
• W4224212018 cites W2038834627 @default.
• W4224212018 cites W2039628839 @default.
• W4224212018 cites W2043362739 @default.
• W4224212018 cites W2047625008 @default.
• W4224212018 cites W2049311907 @default.
• W4224212018 cites W2051397440 @default.
• W4224212018 cites W2058488942 @default.
• W4224212018 cites W2063004740 @default.
• W4224212018 cites W2069406467 @default.
• W4224212018 cites W2075013266 @default.
• W4224212018 cites W2078838424 @default.
• W4224212018 cites W2081910176 @default.
• W4224212018 cites W2087081812 @default.
• W4224212018 cites W2088885331 @default.
• W4224212018 cites W2089026312 @default.
• W4224212018 cites W2091829761 @default.
• W4224212018 cites W2091944821 @default.
• W4224212018 cites W2099729100 @default.
• W4224212018 cites W2108170961 @default.
• W4224212018 cites W2114734871 @default.
• W4224212018 cites W2115053014 @default.
• W4224212018 cites W2129900710 @default.
• W4224212018 cites W2130772805 @default.
• W4224212018 cites W2133780343 @default.
• W4224212018 cites W2146752835 @default.
• W4224212018 cites W2148273530 @default.
• W4224212018 cites W2153326760 @default.
• W4224212018 cites W2158305464 @default.
• W4224212018 cites W2162215759 @default.
• W4224212018 cites W2165007635 @default.
• W4224212018 cites W2171741886 @default.
• W4224212018 cites W2236197236 @default.
• W4224212018 cites W2324955034 @default.
• W4224212018 cites W2342695230 @default.
• W4224212018 cites W2406318908 @default.
• W4224212018 cites W2466905028 @default.
• W4224212018 cites W2497640596 @default.
• W4224212018 cites W2551689768 @default.
• W4224212018 cites W2765405552 @default.
• W4224212018 cites W2802116481 @default.
• W4224212018 cites W2897061114 @default.
• W4224212018 cites W2925265835 @default.
• W4224212018 cites W2992658524 @default.
• W4224212018 cites W3004929911 @default.
• W4224212018 cites W3118796474 @default.
• W4224212018 cites W3142866430 @default.
• W4224212018 cites W3159739234 @default.
• W4224212018 cites W3160490834 @default.
• W4224212018 cites W3163390634 @default.
• W4224212018 cites W4207067478 @default.
• W4224212018 cites W4224230429 @default.
• W4224212018 cites W4292023008 @default.
• W4224212018 cites W4293386067 @default.
• W4224212018 cites W779523286 @default.
• W4224212018 cites W929204220 @default.
• W4224212018 doi "https://doi.org/10.1016/j.jvolgeores.2022.107555" @default.
• W4224212018 hasPublicationYear "2022" @default.
• W4224212018 type Work @default.

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