Compositional layering in io driven by magmatic segregation and volcanism
The compositional evolution of volcanic bodies like Io is not well understood. Magmatic segregation and volcanic eruptions transport tidal heat from Io's interior to its surface. Several observed eruptions appear to be extremely high temperature (≥1600 K), suggesting either very high degrees of...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Wiley
2020
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| _version_ | 1797064836093313024 |
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| author | Spencer, DC Katz, RF Hewitt, IJ May, DA Keszthelyi, LP |
| author_facet | Spencer, DC Katz, RF Hewitt, IJ May, DA Keszthelyi, LP |
| author_sort | Spencer, DC |
| collection | OXFORD |
| description | The compositional evolution of volcanic bodies like Io is not well understood. Magmatic segregation and volcanic eruptions transport tidal heat from Io's interior to its surface. Several observed eruptions appear to be extremely high temperature (≥1600 K), suggesting either very high degrees of melting, refractory source regions, or intensive viscous heating on ascent. To address this ambiguity, we develop a model that couples crust and mantle dynamics to a simple compositional system. We analyze the model to investigate chemical structure and evolution. We demonstrate that magmatic segregation and volcanic eruptions lead to stratification of the mantle, the extent of which depends on how easily high temperature melts from the more refractory lower mantle can migrate upwards. We propose that Io's highest temperature eruptions originate from this lower mantle region and that such eruptions act to limit the degree of compositional stratification. |
| first_indexed | 2024-03-06T21:20:04Z |
| format | Journal article |
| id | oxford-uuid:41288f16-b486-4efd-84c8-83c770d760ad |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:20:04Z |
| publishDate | 2020 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:41288f16-b486-4efd-84c8-83c770d760ad2022-03-26T14:41:55ZCompositional layering in io driven by magmatic segregation and volcanismJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:41288f16-b486-4efd-84c8-83c770d760adEnglishSymplectic ElementsWiley2020Spencer, DCKatz, RFHewitt, IJMay, DAKeszthelyi, LPThe compositional evolution of volcanic bodies like Io is not well understood. Magmatic segregation and volcanic eruptions transport tidal heat from Io's interior to its surface. Several observed eruptions appear to be extremely high temperature (≥1600 K), suggesting either very high degrees of melting, refractory source regions, or intensive viscous heating on ascent. To address this ambiguity, we develop a model that couples crust and mantle dynamics to a simple compositional system. We analyze the model to investigate chemical structure and evolution. We demonstrate that magmatic segregation and volcanic eruptions lead to stratification of the mantle, the extent of which depends on how easily high temperature melts from the more refractory lower mantle can migrate upwards. We propose that Io's highest temperature eruptions originate from this lower mantle region and that such eruptions act to limit the degree of compositional stratification. |
| spellingShingle | Spencer, DC Katz, RF Hewitt, IJ May, DA Keszthelyi, LP Compositional layering in io driven by magmatic segregation and volcanism |
| title | Compositional layering in io driven by magmatic segregation and volcanism |
| title_full | Compositional layering in io driven by magmatic segregation and volcanism |
| title_fullStr | Compositional layering in io driven by magmatic segregation and volcanism |
| title_full_unstemmed | Compositional layering in io driven by magmatic segregation and volcanism |
| title_short | Compositional layering in io driven by magmatic segregation and volcanism |
| title_sort | compositional layering in io driven by magmatic segregation and volcanism |
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