FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4248847032> ?p ?o ?g. }

• W4248847032 endingPage "1008" @default.
• W4248847032 startingPage "995" @default.
• W4248847032 abstract "Postcaldera (≤ 180 ka) peralkaline trachytes and rhyolites from Socorro Island, Mexico, have relatively restricted ranges of (230Th)/(232Th)o (0.99−1.14) and (238U)/(232Th) (0.91−0.98). Most of the samples exhibit 238U−230Th disequilibria, with initial (230Th) enrichments of up to 21%. In general, (230Th)/(232Th)o values are lower in the rhyolites than in the trachytes. (230Th)/(232Th)o of postcaldera alkalic basalts may also have a relatively restricted range (0.94−0.96), although ratios as low as 0.84 and as high as 1.04 are permitted by uncertainties in some of the ages. These values are also lower than those of the trachytes. Sr and Nd isotopic ratios of the basaltic and silicic suites have fairly restricted ranges that collectively overlap. Previous work suggests that trachytic magmas form by partial melting of basaltic basement, but closed-system partial melting of a source with Th isotope ratios like those of the postcaldera basalts would probably produce trachytic melts with lower rather than higher (230Th)/(232Th)o. Open-system processes affecting melts from such basement are also ruled out because of the lack of a reasonable contaminant that could increase the (230Th)/(232Th) of the trachytic magmas. Postcaldera trachytic magmas probably derive from basaltic basement characterized by Th isotope ratios similar to those of the silicic rocks, and moderate degrees of melting of such material can account for the Th/U of the trachytes. Differences in (230Th)/(232Th)o between the trachytes and rhyolites delimit maximum residence times for rhyolitic magmas of 40−50 kyr, but it is likely that residence times are shorter. This coupled with correlations between Sr and Nd isotopes and indices of differentiation within the silicic suite suggest that rhyolites are related to trachytes by assimilation–fractional crystallization. The most likely assimilant is basement that formed during the silicic phases of magmatism on Socorro. Our results indicate that volcanic basement may be an important component in the genesis of evolved ocean island magmas." @default.
• W4248847032 created "2022-05-12" @default.
• W4248847032 creator A5013565235 @default.
• W4248847032 date "1998-05-01" @default.
• W4248847032 modified "2023-09-24" @default.
• W4248847032 title "Genesis of Evolved Ocean Island Magmas by Deep- and Shallow-Level Basement Recycling, Socorro Island, Mexico: Constraints from Th and other Isotope Signatures" @default.
• W4248847032 doi "https://doi.org/10.1093/petrology/39.5.995" @default.
• W4248847032 hasPublicationYear "1998" @default.
• W4248847032 type Work @default.
• W4248847032 citedByCount "0" @default.
• W4248847032 crossrefType "journal-article" @default.
• W4248847032 hasAuthorship W4248847032A5013565235 @default.
• W4248847032 hasBestOaLocation W42488470321 @default.
• W4248847032 hasConcept C104962623 @default.
• W4248847032 hasConcept C120806208 @default.
• W4248847032 hasConcept C127313418 @default.
• W4248847032 hasConcept C147645078 @default.
• W4248847032 hasConcept C161509811 @default.
• W4248847032 hasConcept C166957645 @default.
• W4248847032 hasConcept C170187044 @default.
• W4248847032 hasConcept C17409809 @default.
• W4248847032 hasConcept C192241223 @default.
• W4248847032 hasConcept C25822816 @default.
• W4248847032 hasConcept C2781297371 @default.
• W4248847032 hasConcept C36723533 @default.
• W4248847032 hasConcept C79572550 @default.
• W4248847032 hasConcept C95457728 @default.
• W4248847032 hasConceptScore W4248847032C104962623 @default.
• W4248847032 hasConceptScore W4248847032C120806208 @default.
• W4248847032 hasConceptScore W4248847032C127313418 @default.
• W4248847032 hasConceptScore W4248847032C147645078 @default.
• W4248847032 hasConceptScore W4248847032C161509811 @default.
• W4248847032 hasConceptScore W4248847032C166957645 @default.
• W4248847032 hasConceptScore W4248847032C170187044 @default.
• W4248847032 hasConceptScore W4248847032C17409809 @default.
• W4248847032 hasConceptScore W4248847032C192241223 @default.
• W4248847032 hasConceptScore W4248847032C25822816 @default.
• W4248847032 hasConceptScore W4248847032C2781297371 @default.
• W4248847032 hasConceptScore W4248847032C36723533 @default.
• W4248847032 hasConceptScore W4248847032C79572550 @default.
• W4248847032 hasConceptScore W4248847032C95457728 @default.
• W4248847032 hasIssue "5" @default.
• W4248847032 hasLocation W42488470321 @default.
• W4248847032 hasOpenAccess W4248847032 @default.
• W4248847032 hasPrimaryLocation W42488470321 @default.
• W4248847032 hasRelatedWork W1551582883 @default.
• W4248847032 hasRelatedWork W1996723006 @default.
• W4248847032 hasRelatedWork W2016940122 @default.
• W4248847032 hasRelatedWork W2082046679 @default.
• W4248847032 hasRelatedWork W2106518739 @default.
• W4248847032 hasRelatedWork W2119816896 @default.
• W4248847032 hasRelatedWork W2137388098 @default.
• W4248847032 hasRelatedWork W2363994018 @default.
• W4248847032 hasRelatedWork W2619140917 @default.
• W4248847032 hasRelatedWork W4234603596 @default.
• W4248847032 hasVolume "39" @default.
• W4248847032 isParatext "false" @default.
• W4248847032 isRetracted "false" @default.
• W4248847032 workType "article" @default.