Show simple item record

dc.contributor.authorSunshine, Jessica M.
dc.contributor.authorBus, Schelte J.
dc.contributor.authorCorrigan, Catherine M.
dc.contributor.authorMcCoy, Timothy J.
dc.contributor.authorBurbine, Thomas H.
dc.date.accessioned2021-02-12T21:41:19Z
dc.date.available2021-02-12T21:41:19Z
dc.date.issued2007-01-01
dc.identifier.citationSunshine, J. M., Bus, S. J., Corrigan, C. M., McCoy, T. J., & Burbine, T. H. (2007). Olivine‐dominated asteroids and meteorites: Distinguishing nebular and igneous histories. Meteoritics & Planetary Science, 42(2), 155-170.
dc.identifier.issn1945-5100
dc.identifier.doi10.1111/j.1945-5100.2007.tb00224.x
dc.identifier.urihttp://hdl.handle.net/10150/656238
dc.description.abstractMelting models indicate that the composition and abundance of olivine systematically co-vary and are therefore excellent petrologic indicators. However, heliocentric distance, and thus surface temperature, has a significant effect on the spectra of olivine-rich asteroids. We show that composition and temperature complexly interact spectrally, and must be simultaneously taken into account in order to infer olivine composition accurately. We find that most (7/9) of the olivine-dominated asteroids are magnesian and thus likely sampled mantles differentiated from ordinary chondrite sources (e.g.,pallasites). However, two other olivine-rich asteroids (289 Nenetta and 246 Asporina) are found to be more ferroan. Melting models show that partial melting cannot produce olivine-rich residues that are more ferroan than the chondrite precursor from which they formed. Thus, even moderately ferroan olivine must have non-ordinary chondrite origins, and therefore likely originate from oxidized R chondrites or melts thereof, which reflect variations in nebular composition within the asteroid belt. This is consistent with the meteoritic record in which R chondrites and brachinites are rare relative to pallasites.
dc.language.isoen
dc.publisherThe Meteoritical Society
dc.relation.urlhttps://meteoritical.org/
dc.rightsCopyright © The Meteoritical Society
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectpallasites
dc.subjectR-chondrite
dc.subjectbrachinites
dc.subjectmeteorites
dc.subjectasteroid spectroscopy
dc.titleOlivine-dominated asteroids and meteorites: Distinguishing nebular and igneous histories
dc.typeArticle
dc.typetext
dc.identifier.journalMeteoritics & Planetary Science
dc.description.collectioninformationThe Meteoritics & Planetary Science archives are made available by the Meteoritical Society and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume42
dc.source.issue2
dc.source.beginpage155
dc.source.endpage170
refterms.dateFOA2021-02-12T21:41:19Z


Files in this item

Thumbnail
Name:
15385-17738-1-PB.pdf
Size:
1.823Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record