FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2070511816> ?p ?o ?g. }

• W2070511816 endingPage "135" @default.
• W2070511816 startingPage "115" @default.
• W2070511816 abstract "Inclusions of plutonic, metavolcanic and volcanic rocks are abundant in dacite pumice and lava from the 1980–1986 eruption sequence at Mount St. Helens. Point counts of inclusions exposed in talus blocks from the dome from 1980 through 1983 show that inclusions form approximately 3.5 vol% of the lava. Eighty-five percent of the inclusions are medium-grained gabbros with an average diameter of 6 cm. Additional rock types include quartz diorite, hornfelsic basalt, dacite, andesite and vein quartz. Disaggregated inclusions are common and define shear planes within the dome. These fragmented inclusions may significantly contaminate analyses of the dacite. The gabbroic inclusions are of four distinct types, all with mineral assemblages consistent with crystallization pressures of less than 9 kb. Textures and major-element compositions indicate that most of the gabbroic inclusions are cumulates. The most abundant inclusion type is laminated gabbronorite, which contains up to 9% interstitial glass, derived from partial melting. The presence of quartz veins and hornblende-bearing veins within sheared zones in the laminated gabbronorite indicates that the source of these inclusions was holocrystalline rock that had been penetrated by water-rich fluids. The gabbronorite contained sufficient water to be susceptible to partial melting when the magma that fed the 1980–1986 eruption sequence was emplaced nearby. Various types of gabbroic inclusions, including the laminated gabbronorite, are common in Mount St. Helens lavas of approximately the last 3000 years. This coincides with the interval in which Mount St. Helens first erupted basalt and basaltic andesite lavas. These observations, together with the fact that the gabbroic inclusions are compositionally unlike any of the Tertiary intrusive rocks in the Mount St. Helens area, strongly suggest that the inclusions are related to the introduction of basalt to the Mount St. Helens magmatic system. The source of the gabbros could be a layered mafic pluton formed through crystal accumulation from multiple batches of basaltic magma emplaced at mid-to upper-crustal depths beneath the volcano. The prevalence of explosive eruptions at Mount St. Helens may play a part in bringing the inclusions to the surface. The eruptive products of the cataclysmic eruption of May 18,1980 contain notably fewer inclusions than the pyroclastic flows and dome lavas erupted subsequently. This suggests that the May 18 eruption shattered conduit wall rock that was subsequently stoped into the magma and carried to the surface later in the eruption series." @default.
• W2070511816 created "2016-06-24" @default.
• W2070511816 creator A5051845890 @default.
• W2070511816 date "1995-07-01" @default.
• W2070511816 modified "2023-10-02" @default.
• W2070511816 title "Inclusions in Mount St. Helens dacite erupted from 1980 through 1983" @default.
• W2070511816 cites W1489244774 @default.
• W2070511816 cites W1972308291 @default.
• W2070511816 cites W2000812216 @default.
• W2070511816 cites W2002517228 @default.
• W2070511816 cites W2008271438 @default.
• W2070511816 cites W2014814915 @default.
• W2070511816 cites W2023752957 @default.
• W2070511816 cites W2028522072 @default.
• W2070511816 cites W2035366182 @default.
• W2070511816 cites W2035993081 @default.
• W2070511816 cites W2052055789 @default.
• W2070511816 cites W2054920148 @default.
• W2070511816 cites W2064604364 @default.
• W2070511816 cites W2066771410 @default.
• W2070511816 cites W2081830829 @default.
• W2070511816 cites W2085480633 @default.
• W2070511816 cites W2087431458 @default.
• W2070511816 cites W2088019799 @default.
• W2070511816 cites W2103421742 @default.
• W2070511816 cites W2158488855 @default.
• W2070511816 cites W2334502986 @default.
• W2070511816 cites W2342933910 @default.
• W2070511816 doi "https://doi.org/10.1016/0377-0273(94)00074-q" @default.
• W2070511816 hasPublicationYear "1995" @default.
• W2070511816 type Work @default.
• W2070511816 sameAs 2070511816 @default.
• W2070511816 citedByCount "43" @default.
• W2070511816 countsByYear W20705118162012 @default.
• W2070511816 countsByYear W20705118162013 @default.
• W2070511816 countsByYear W20705118162014 @default.
• W2070511816 countsByYear W20705118162015 @default.
• W2070511816 countsByYear W20705118162016 @default.
• W2070511816 countsByYear W20705118162017 @default.
• W2070511816 countsByYear W20705118162018 @default.
• W2070511816 countsByYear W20705118162019 @default.
• W2070511816 countsByYear W20705118162020 @default.
• W2070511816 countsByYear W20705118162022 @default.
• W2070511816 countsByYear W20705118162023 @default.
• W2070511816 crossrefType "journal-article" @default.
• W2070511816 hasAuthorship W2070511816A5051845890 @default.
• W2070511816 hasConcept C107504934 @default.
• W2070511816 hasConcept C113754120 @default.
• W2070511816 hasConcept C120806208 @default.
• W2070511816 hasConcept C127313418 @default.
• W2070511816 hasConcept C151730666 @default.
• W2070511816 hasConcept C161509811 @default.
• W2070511816 hasConcept C17409809 @default.
• W2070511816 hasConcept C183222429 @default.
• W2070511816 hasConcept C192241223 @default.
• W2070511816 hasConcept C24343810 @default.
• W2070511816 hasConcept C2778965357 @default.
• W2070511816 hasConcept C2779181077 @default.
• W2070511816 hasConcept C2779870107 @default.
• W2070511816 hasConcept C36986328 @default.
• W2070511816 hasConcept C5900021 @default.
• W2070511816 hasConcept C79572550 @default.
• W2070511816 hasConceptScore W2070511816C107504934 @default.
• W2070511816 hasConceptScore W2070511816C113754120 @default.
• W2070511816 hasConceptScore W2070511816C120806208 @default.
• W2070511816 hasConceptScore W2070511816C127313418 @default.
• W2070511816 hasConceptScore W2070511816C151730666 @default.
• W2070511816 hasConceptScore W2070511816C161509811 @default.
• W2070511816 hasConceptScore W2070511816C17409809 @default.
• W2070511816 hasConceptScore W2070511816C183222429 @default.
• W2070511816 hasConceptScore W2070511816C192241223 @default.
• W2070511816 hasConceptScore W2070511816C24343810 @default.
• W2070511816 hasConceptScore W2070511816C2778965357 @default.
• W2070511816 hasConceptScore W2070511816C2779181077 @default.
• W2070511816 hasConceptScore W2070511816C2779870107 @default.
• W2070511816 hasConceptScore W2070511816C36986328 @default.
• W2070511816 hasConceptScore W2070511816C5900021 @default.
• W2070511816 hasConceptScore W2070511816C79572550 @default.
• W2070511816 hasIssue "1-4" @default.
• W2070511816 hasLocation W20705118161 @default.
• W2070511816 hasOpenAccess W2070511816 @default.
• W2070511816 hasPrimaryLocation W20705118161 @default.
• W2070511816 hasRelatedWork W1974327081 @default.
• W2070511816 hasRelatedWork W2071532815 @default.
• W2070511816 hasRelatedWork W2080245506 @default.
• W2070511816 hasRelatedWork W2126200569 @default.
• W2070511816 hasRelatedWork W2170765740 @default.
• W2070511816 hasRelatedWork W2374091888 @default.
• W2070511816 hasRelatedWork W2393203504 @default.
• W2070511816 hasRelatedWork W2950790222 @default.
• W2070511816 hasRelatedWork W3000478367 @default.
• W2070511816 hasRelatedWork W773777669 @default.
• W2070511816 hasVolume "66" @default.
• W2070511816 isParatext "false" @default.
• W2070511816 isRetracted "false" @default.
• W2070511816 magId "2070511816" @default.
• W2070511816 workType "article" @default.