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  • Jenniskens, PeterSETI Institute, Carl Sagan Center, Mountain View, California, 94043 USA; NASA Ames Research Center, Moffett Field, California, 94035 USA (författare)

The Creston, California, meteorite fall and the origin of L chondrites

  • Artikel/kapitelEngelska2019

Förlag, utgivningsår, omfång ...

  • 2019-01-20
  • John Wiley & Sons,2019
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:ltu-73425
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-73425URI
  • https://doi.org/10.1111/maps.13235DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Validerad;2019;Nivå 2;2019-04-04 (johcin)
  • It has been proposed that all L chondrites resulted from an ongoing collisional cascade of fragments that originated from the formation of the ~500 Ma old asteroid family Gefion, located near the 5:2 mean‐motion resonance with Jupiter in the middle Main Belt. If so, L chondrite pre‐atmospheric orbits should be distributed as expected for that source region. Here, we present contradictory results from the orbit and collisional history of the October 24, 2015, L6 ordinary chondrite fall at Creston, CA (here reclassified to L5/6). Creston's short 1.30 ± 0.02 AU semimajor axis orbit would imply a long dynamical evolution if it originated from the middle Main Belt. Indeed, Creston has a high cosmic ray exposure age of 40–50 Ma. However, Creston's small meteoroid size and low 4.23 ± 0.07° inclination indicate a short dynamical lifetime against collisions. This suggests, instead, that Creston originated most likely in the inner asteroid belt and was delivered via the ν6 resonance. The U‐Pb systematics of Creston apatite reveals a Pb‐Pb age of 4,497.1 ± 3.7 Ma, and an upper intercept U‐Pb age of 4,496.7 ± 5.8 Ma (2σ), circa 70 Ma after formation of CAI, as found for other L chondrites. The K‐Ar (age ~4.3 Ga) and U,Th‐He (age ~1 Ga) chronometers were not reset at ~500 Ma, while the lower intercept U‐Pb age is poorly defined as 770 ± 320 Ma. So far, the three known L chondrites that impacted on orbits with semimajor axes a <2.0 AU all have high (>3 Ga) K‐Ar ages. This argues for a source of some of our L chondrites in the inner Main Belt. Not all L chondrites originate in a continuous population of Gefion family debris stretching across the 3:1 mean‐motion resonance.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Utas, JasonInstitute of Geophysics and Planetary Physics, UCLA, Los Angeles, California, 90095 USA (författare)
  • Yin, Qing-ZhuDepartment of Earth and Planetary Sciences, University of California at Davis, Davis, California, 95616 USA (författare)
  • Matson, Robert D.Leidos, Seal Beach, California, 90740 USA (författare)
  • Fries, MarcAstromaterials Research and Exploration Science, NASA Johnson Space Center, Houston, Texas, 77058 USA (författare)
  • Howell, AndreasSpalding Allsky Camera Network, SkySentinel, LLC (SSL), Melbourne, Florida, 32940 USA (författare)
  • Free, DwayneSpalding Allsky Camera Network, SkySentinel, LLC (SSL), Melbourne, Florida, 32940 USA (författare)
  • Albers, JimSETI Institute, Carl Sagan Center, Mountain View, California, 94043 USA (författare)
  • Devillepoix, HadrienFaculty of Science & Engineering, Curtin University, Bentley, Perth, Western Australia, 6102 Australia (författare)
  • Bland, PhilFaculty of Science & Engineering, Curtin University, Bentley, Perth, Western Australia, 6102 Australia (författare)
  • Miller, AaronAncient Earth Trading Co., Atascadero, California, 93423 USA (författare)
  • Verish, RobertMeteorite Recovery Lab, Escondido, California, 92046 USA (författare)
  • Garvie, Laurence A. J.Center for Meteorite Studies, School of Earth & Space Exploration, Arizona State University, Tempe, Arizona, 85287 USA (författare)
  • Zolensky, Michael E.Astromaterials Research and Exploration Science, NASA Johnson Space Center, Houston, Texas, 77058 USA (författare)
  • Ziegler, KarenInstitute of Meteoritics, University of New Mexico, Albuquerque, New Mexico, 87131 USA (författare)
  • Sanborn, MatthewDepartment of Earth and Planetary Sciences, University of California at Davis, Davis, California, 95616 USA (författare)
  • Verosub, Kenneth L.Department of Earth and Planetary Sciences, University of California at Davis, Davis, California, 95616 USA (författare)
  • Rowland, Douglas J.Center for Molecular and Genomic Imaging, Department of Biomedical Engineering, UC Davis, Davis, California, 95616 USA (författare)
  • Ostrowski, Daniel R.NASA Ames Research Center, Moffett Field, California, 94035 USA; Bay Area Environmental Research Institute, 625 2nd St., Suite 209, Petaluma, California, 94952 USA (författare)
  • Bryson, KathrynNASA Ames Research Center, Moffett Field, California, 94035 USA; Bay Area Environmental Research Institute, 625 2nd St., Suite 209, Petaluma, California, 94952 USA (författare)
  • Laubenstein, MatthiasIst. Naz. di Fiscia Nucleare, Lab. Naz. del Gran Sasso, I-67100 Assergi (AQ), Italy (författare)
  • Zhou, QinNational Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012 China (författare)
  • Li, Qiu-LiState Key Laboratory of Lithospheric Evolution, Inst. Geol. and Geophys., Chinese Acad. Sci., Beijing, 100029 China (författare)
  • Li, Xian-HuaState Key Laboratory of Lithospheric Evolution, Inst. Geol. and Geophys., Chinese Acad. Sci., Beijing, 100029 China (författare)
  • Liu, YuState Key Laboratory of Lithospheric Evolution, Inst. Geol. and Geophys., Chinese Acad. Sci., Beijing, 100029 China (författare)
  • Tang, Guo-QiangState Key Laboratory of Lithospheric Evolution, Inst. Geol. and Geophys., Chinese Acad. Sci., Beijing, 100029 China (författare)
  • Welten, KeesSpace Sciences Laboratory, University of California, Berkeley, California, 94720 USA (författare)
  • Caffee, Marc W.PRIME Laboratory, Purdue University, West Lafayette, Indiana, 47907 USA (författare)
  • Meier, Matthias M. M.Institute of Geochemistry and Petrology, ETH Zürich, CH-8092 Zürich, Switzerland (författare)
  • Plant, Amy A.Institute of Geochemistry and Petrology, ETH Zürich, CH-8092 Zürich, Switzerland (författare)
  • Maden, ColinInstitute of Geochemistry and Petrology, ETH Zürich, CH-8092 Zürich, Switzerland (författare)
  • Busemann, HennerInstitute of Geochemistry and Petrology, ETH Zürich, CH-8092 Zürich, Switzerland (författare)
  • Granvik, MikaelLuleå tekniska universitet,Rymdteknik,University of Helsinki, Department of Physics, FI-00014 Helsinki, Finland(Swepub:ltu)mikgra (författare)
  • SETI Institute, Carl Sagan Center, Mountain View, California, 94043 USA; NASA Ames Research Center, Moffett Field, California, 94035 USAInstitute of Geophysics and Planetary Physics, UCLA, Los Angeles, California, 90095 USA (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Meteoritics and Planetary Science: John Wiley & Sons54:4, s. 699-7201086-93791945-5100

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