Skip to main content

Cosmic history and a candidate parent asteroid for the quasicrystal-bearing meteorite Khatyrka

Author(s): Meier, Matthias MM; Bindi, Luca; Heck, Philipp R.; Neander, April; Spring, Nicole H.; et al

Download
To refer to this page use: http://arks.princeton.edu/ark:/88435/pr11h5t
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMeier, Matthias MM-
dc.contributor.authorBindi, Luca-
dc.contributor.authorHeck, Philipp R.-
dc.contributor.authorNeander, April-
dc.contributor.authorSpring, Nicole H.-
dc.contributor.authorRiebe, My E.-
dc.contributor.authorMaden, Colin-
dc.contributor.authorBaur, Heinrich-
dc.contributor.authorSteinhardt, Paul J.-
dc.contributor.authorWieler, Rainer-
dc.contributor.authorBusemann, Henner-
dc.date.accessioned2019-03-27T18:08:41Z-
dc.date.available2019-03-27T18:08:41Z-
dc.date.issued2018-05-15en_US
dc.identifier.citationMeier, Matthias MM, Bindi, Luca, Heck, Philipp R, Neander, April, Spring, Nicole H, Riebe, My E, Maden, Colin, Baur, Heinrich, Steinhardt, Paul J, Wieler, Rainer, Busemann, Henner. (2018). Cosmic history and a candidate parent asteroid for the quasicrystal-bearing meteorite Khatyrka. EARTH AND PLANETARY SCIENCE LETTERS, 490 (122 - 131. doi:10.1016/j.epsl.2018.03.025en_US
dc.identifier.issn0012-821X-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr11h5t-
dc.description.abstractThe unique CV-type meteorite Khatyrka is the only natural sample in which “quasicrystals” and associated crystalline Cu, Al-alloys, including khatyrkite and cupalite, have been found. They are suspected to have formed in the early Solar System. To better understand the origin of these exotic phases, and the relationship of Khatyrka to other CV chondrites, we have measured He and Ne in six individual, similar to 40-mu m-sized olivine grains from Khatyrka. We find a cosmic-ray exposure age of about 2-4 Ma (if the meteoroid was <3 m in diameter, more if it was larger). The U, Th-He ages of the olivine grains suggest that Khatyrka experienced a relatively recent (<600 Ma) shock event, which created pressure and temperature conditions sufficient to form both the quasicrystals and the high-pressure phases found in the meteorite. We propose that the parent body of Khatyrka is the large K-type asteroid 89 Julia, based on its peculiar, but matching reflectance spectrum, evidence for an impact/shock event within the last few 100 Ma (which formed the Julia family), and its location close to strong orbital resonances, so that the Khatyrka meteoroid could plausibly have reached Earth within its rather short cosmic-ray exposure age. (C) 2018 Elsevier B.V. All rights reserved.en_US
dc.format.extent122 - 131en_US
dc.language.isoen_USen_US
dc.relation.ispartofEARTH AND PLANETARY SCIENCE LETTERSen_US
dc.rightsAuthor's manuscripten_US
dc.titleCosmic history and a candidate parent asteroid for the quasicrystal-bearing meteorite Khatyrkaen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1016/j.epsl.2018.03.025-
dc.date.eissued2018-03-22en_US
dc.identifier.eissn1385-013X-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

Files in This Item:
File Description SizeFormat 
1803.03513.pdf8.38 MBAdobe PDFView/Download


Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.