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• W2161205090 endingPage "2263" @default.
• W2161205090 startingPage "2243" @default.
• W2161205090 abstract "The Taupo Volcanic Zone (TVZ), located in the North Island of New Zealand, represents part of a magmatic arc that is at present undergoing active extension. Around 0·9 Myr ago, an acceleration in rifting was followed by a progressive transition in the composition of volcanic products (until 0·7 Ma) from typical arc-type andesite into overwhelmingly large, caldera-forming rhyolitic eruptions with subordinate basalt and dacite in the Central TVZ. Despite an obvious compositional gap in the erupted products in the Central TVZ within the last 0·7 Myr (little to no erupted products with SiO2 contents between 55 and 65 wt %), phenocryst minerals (plagioclase, amphibole, pyroxene) show an uninterrupted compositional record that suggests crystallization from a continuum of melt compositions. Coupled with radiogenic isotope evidence, the whole-rock and mineral chemistry data are consistent with magmatic differentiation controlled by crystal fractionation of primary mantle-derived magmas accompanied by some assimilation of local wall-rocks. In the Southern TVZ and in the early part of the Central TVZ, magmatic differentiation was dominated by the lower crustal evolution of relatively dry ( 1wt % H2O) arc basalts, crystallizing a pyroxene^plagioclase-dominated assemblage. However, the conditions of crystallization in the lower crust appear to have changed within the last million years in the Central TVZ, with amphibole and oxides appearing earlier in the crystallization sequence. In this framework and using numerical simulations coupling crystallization kinetics and multiphase fluid dynamics of magma reservoirs, we show that melts extracted from crystal mushes within an optimal ‘extraction window’ ( 50 and 80 vol. % crystals) match those erupted at the surface. Lower crustal mushes fed by basalt with 1wt % H2O (dominated by a pyroxene^plagioclase assemblage) release andesitic melts at the extraction window. These melts then erupt at the surface to form the observed andesitic part of the arc.With a slightly higher water content ( 2 wt %) in the basalt, the melt composition at the extraction window from lower crustal mushes is dacitic rather than andesitic. Although some dacitic melts will reach the surface, most will be trapped in the upper crust and crystallize to form a silicic mush. Extraction of the interstitial liquid after450% crystallization from this upper crustal reservoir produces the large volumes of rhyolitic magma erupted over the past 0·7 Myr (44000 km from ignimbrite-forming eruptions)." @default.
• W2161205090 created "2016-06-24" @default.
• W2161205090 creator A5008707827 @default.
• W2161205090 creator A5027457946 @default.
• W2161205090 creator A5080346411 @default.
• W2161205090 creator A5087908599 @default.
• W2161205090 date "2011-10-29" @default.
• W2161205090 modified "2023-10-17" @default.
• W2161205090 title "Rift-Related Transition from Andesite to Rhyolite Volcanism in the Taupo Volcanic Zone (New Zealand) Controlled by Crystal–melt Dynamics in Mush Zones with Variable Mineral Assemblages" @default.
• W2161205090 cites W1589361213 @default.
• W2161205090 cites W1675451487 @default.
• W2161205090 cites W1964697790 @default.
• W2161205090 cites W1968389139 @default.
• W2161205090 cites W1969552190 @default.
• W2161205090 cites W1970279629 @default.
• W2161205090 cites W1976483605 @default.
• W2161205090 cites W1978100541 @default.
• W2161205090 cites W1978696207 @default.
• W2161205090 cites W1980207799 @default.
• W2161205090 cites W1981756317 @default.
• W2161205090 cites W1985857513 @default.
• W2161205090 cites W1986596745 @default.
• W2161205090 cites W1986630644 @default.
• W2161205090 cites W1988172937 @default.
• W2161205090 cites W1990672888 @default.
• W2161205090 cites W1991456370 @default.
• W2161205090 cites W1991589759 @default.
• W2161205090 cites W1995539110 @default.
• W2161205090 cites W1999782507 @default.
• W2161205090 cites W2003076733 @default.
• W2161205090 cites W2003348849 @default.
• W2161205090 cites W2005284674 @default.
• W2161205090 cites W2009612341 @default.
• W2161205090 cites W2010985259 @default.
• W2161205090 cites W2011746009 @default.
• W2161205090 cites W2014493041 @default.
• W2161205090 cites W2016471425 @default.
• W2161205090 cites W2017853565 @default.
• W2161205090 cites W2019049432 @default.
• W2161205090 cites W2019682842 @default.
• W2161205090 cites W2020339717 @default.
• W2161205090 cites W2020729287 @default.
• W2161205090 cites W2022974215 @default.
• W2161205090 cites W2024494616 @default.
• W2161205090 cites W2027868803 @default.
• W2161205090 cites W2028664107 @default.
• W2161205090 cites W2029130822 @default.
• W2161205090 cites W2029938083 @default.
• W2161205090 cites W2030306569 @default.
• W2161205090 cites W2032585463 @default.
• W2161205090 cites W2040120198 @default.
• W2161205090 cites W2042692134 @default.
• W2161205090 cites W2044812716 @default.
• W2161205090 cites W2045603365 @default.
• W2161205090 cites W2052442867 @default.
• W2161205090 cites W2053396208 @default.
• W2161205090 cites W2053457956 @default.
• W2161205090 cites W2055595543 @default.
• W2161205090 cites W2056107963 @default.
• W2161205090 cites W2057436903 @default.
• W2161205090 cites W2057670758 @default.
• W2161205090 cites W2057902578 @default.
• W2161205090 cites W2059211005 @default.
• W2161205090 cites W2061076479 @default.
• W2161205090 cites W2067592635 @default.
• W2161205090 cites W2068015389 @default.
• W2161205090 cites W2070528862 @default.
• W2161205090 cites W2075013266 @default.
• W2161205090 cites W2076793534 @default.
• W2161205090 cites W2078816475 @default.
• W2161205090 cites W2078838424 @default.
• W2161205090 cites W2079317589 @default.
• W2161205090 cites W2081723971 @default.
• W2161205090 cites W2085148402 @default.
• W2161205090 cites W2085506457 @default.
• W2161205090 cites W2086394372 @default.
• W2161205090 cites W2090301451 @default.
• W2161205090 cites W2090578063 @default.
• W2161205090 cites W2091829761 @default.
• W2161205090 cites W2093710394 @default.
• W2161205090 cites W2094159286 @default.
• W2161205090 cites W2099401875 @default.
• W2161205090 cites W2105265476 @default.
• W2161205090 cites W2107590758 @default.
• W2161205090 cites W2110433745 @default.
• W2161205090 cites W2117487351 @default.
• W2161205090 cites W2118670133 @default.
• W2161205090 cites W2118699879 @default.
• W2161205090 cites W2119001675 @default.
• W2161205090 cites W2120747481 @default.
• W2161205090 cites W2124117088 @default.
• W2161205090 cites W2127973110 @default.
• W2161205090 cites W2130612399 @default.
• W2161205090 cites W2130833734 @default.
• W2161205090 cites W2145898590 @default.
• W2161205090 cites W2147136271 @default.
• W2161205090 cites W2148273530 @default.
• W2161205090 cites W2150994314 @default.

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