Geochemistry and petrology of howardite Miller Range 11100:A lithologically diverse piece of the Vestan regolith
The howardite-eucrite-diogenite (HED) clan of meteorites, which most likely originate from the asteroid Vesta, provide an opportunity to combine in-depth sample analysis with the comprehensive remote-sensing data set from NASA’s recent Dawn mission. Miller Range (MIL) 11100, an Antarctic howardite,...
Published in: | Meteoritics & Planetary Science |
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Online Access: | https://hdl.handle.net/1983/afcdef30-22d0-4c03-85ff-82cd3e98d299 https://research-information.bris.ac.uk/en/publications/afcdef30-22d0-4c03-85ff-82cd3e98d299 https://doi.org/10.1111/maps.12782 https://research-information.bris.ac.uk/ws/files/117153693/Gregory_et_al_manuscript_nocomments_nomarkup.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/afcdef30-22d0-4c03-85ff-82cd3e98d299 2023-05-15T14:03:50+02:00 Geochemistry and petrology of howardite Miller Range 11100:A lithologically diverse piece of the Vestan regolith Gregory, Timothy Joy, Katherine Curran, Natalie Strekopytov, Stanislav 2017-02-01 application/pdf https://hdl.handle.net/1983/afcdef30-22d0-4c03-85ff-82cd3e98d299 https://research-information.bris.ac.uk/en/publications/afcdef30-22d0-4c03-85ff-82cd3e98d299 https://doi.org/10.1111/maps.12782 https://research-information.bris.ac.uk/ws/files/117153693/Gregory_et_al_manuscript_nocomments_nomarkup.pdf eng eng info:eu-repo/semantics/openAccess Gregory , T , Joy , K , Curran , N & Strekopytov , S 2017 , ' Geochemistry and petrology of howardite Miller Range 11100 : A lithologically diverse piece of the Vestan regolith ' , Meteoritics and Planetary Science , vol. 52 , no. 2 , pp. 206-224 . https://doi.org/10.1111/maps.12782 article 2017 ftubristolcris https://doi.org/10.1111/maps.12782 2023-01-05T23:51:04Z The howardite-eucrite-diogenite (HED) clan of meteorites, which most likely originate from the asteroid Vesta, provide an opportunity to combine in-depth sample analysis with the comprehensive remote-sensing data set from NASA’s recent Dawn mission. Miller Range (MIL) 11100, an Antarctic howardite, contains diverse rock and mineral fragments from common HED lithologies (diogenites, cumulate eucrites, and basaltic eucrites). It also contains a rare pyroxferroite-bearing lithology—not recognized in HED until recently—and rare Mg-rich (Fo86-91) olivine crystals that possibly represent material excavated from the Vestan mantle. Clast components underwent different histories of thermal and impact metamorphism before being incorporated into this sample, reflecting the diversity in geological histories experienced by different parts of Vesta. The bulk chemical composition and petrography of MIL 11100 suggest that it is akin to the fragmental howardite meteorites. The strong lithological heterogeneity across this sample suggests that at least some parts of the Vestan regolith show heterogeneity on the mm-scale. We combine the outcomes of this study with data from NASA’s Dawn mission and hypothesize on possible source regions for this meteorite on the surface of Vesta. Article in Journal/Newspaper Antarc* Antarctic University of Bristol: Bristol Research Antarctic Miller Range ENVELOPE(157.000,157.000,-83.167,-83.167) Meteoritics & Planetary Science 52 2 206 224 |
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Open Polar |
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University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
description |
The howardite-eucrite-diogenite (HED) clan of meteorites, which most likely originate from the asteroid Vesta, provide an opportunity to combine in-depth sample analysis with the comprehensive remote-sensing data set from NASA’s recent Dawn mission. Miller Range (MIL) 11100, an Antarctic howardite, contains diverse rock and mineral fragments from common HED lithologies (diogenites, cumulate eucrites, and basaltic eucrites). It also contains a rare pyroxferroite-bearing lithology—not recognized in HED until recently—and rare Mg-rich (Fo86-91) olivine crystals that possibly represent material excavated from the Vestan mantle. Clast components underwent different histories of thermal and impact metamorphism before being incorporated into this sample, reflecting the diversity in geological histories experienced by different parts of Vesta. The bulk chemical composition and petrography of MIL 11100 suggest that it is akin to the fragmental howardite meteorites. The strong lithological heterogeneity across this sample suggests that at least some parts of the Vestan regolith show heterogeneity on the mm-scale. We combine the outcomes of this study with data from NASA’s Dawn mission and hypothesize on possible source regions for this meteorite on the surface of Vesta. |
format |
Article in Journal/Newspaper |
author |
Gregory, Timothy Joy, Katherine Curran, Natalie Strekopytov, Stanislav |
spellingShingle |
Gregory, Timothy Joy, Katherine Curran, Natalie Strekopytov, Stanislav Geochemistry and petrology of howardite Miller Range 11100:A lithologically diverse piece of the Vestan regolith |
author_facet |
Gregory, Timothy Joy, Katherine Curran, Natalie Strekopytov, Stanislav |
author_sort |
Gregory, Timothy |
title |
Geochemistry and petrology of howardite Miller Range 11100:A lithologically diverse piece of the Vestan regolith |
title_short |
Geochemistry and petrology of howardite Miller Range 11100:A lithologically diverse piece of the Vestan regolith |
title_full |
Geochemistry and petrology of howardite Miller Range 11100:A lithologically diverse piece of the Vestan regolith |
title_fullStr |
Geochemistry and petrology of howardite Miller Range 11100:A lithologically diverse piece of the Vestan regolith |
title_full_unstemmed |
Geochemistry and petrology of howardite Miller Range 11100:A lithologically diverse piece of the Vestan regolith |
title_sort |
geochemistry and petrology of howardite miller range 11100:a lithologically diverse piece of the vestan regolith |
publishDate |
2017 |
url |
https://hdl.handle.net/1983/afcdef30-22d0-4c03-85ff-82cd3e98d299 https://research-information.bris.ac.uk/en/publications/afcdef30-22d0-4c03-85ff-82cd3e98d299 https://doi.org/10.1111/maps.12782 https://research-information.bris.ac.uk/ws/files/117153693/Gregory_et_al_manuscript_nocomments_nomarkup.pdf |
long_lat |
ENVELOPE(157.000,157.000,-83.167,-83.167) |
geographic |
Antarctic Miller Range |
geographic_facet |
Antarctic Miller Range |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Gregory , T , Joy , K , Curran , N & Strekopytov , S 2017 , ' Geochemistry and petrology of howardite Miller Range 11100 : A lithologically diverse piece of the Vestan regolith ' , Meteoritics and Planetary Science , vol. 52 , no. 2 , pp. 206-224 . https://doi.org/10.1111/maps.12782 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/maps.12782 |
container_title |
Meteoritics & Planetary Science |
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52 |
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2 |
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206 |
op_container_end_page |
224 |
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1766274695012810752 |