Advertisement

Solar System Research

, 45:459 | Cite as

Comment on “Radiation History of Fossil Meteorites from Sweden” by V.A. Alexeev (2010), solar system research, 44, 311–319

  • R. WielerEmail author
  • C. Alwmark
  • P. R. Heck
  • M. M. M. Meier
  • B. Schmitz
Article

Abstract

We dispute the claim by Alexeev (2010) that the numerous fossil meteorites found in mid-Ordovician sediments in southern Sweden can be explained by a single large meteorite shower some 470 million years ago, and—in particular—that the reported variable cosmic ray exposure ages derived from cosmogenic 21Ne in chromite grains extracted from the fossil meteorites actually reflect variable contributions of nucleogenic 21Ne instead.

Keywords

Ordovician Chromite Solar System Research Isochron Ordovician Limestone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Alexeev, V.A., Ordovician Fossil Meteorites in Sweden: Numerous Meteorite Falls or Single Meteorite Shower?, Proc. XL Lunar and Planet. Sci., Houston: Lunar and Planet Inst., 2009. Abstract no. 1003.Google Scholar
  2. Alexeev, V.A., Radiation History of Fossil Meteorites from Sweden, Solar Syst. Res., 2010, vol. 44, pp. 311–319.ADSCrossRefGoogle Scholar
  3. Alwmark, C., Meier, M.M.M., Schmitz, B., et al., Variations in the Abundance of Regolith Derived Micrometeorites with Time, Following the L-Chondrite Parent Body Disruption at 470 Ma, Proc. XLII Lunar and Planet. Sci. Conf., Houston: Lunar and Planet Inst., 2011. Abstract no. 2004.Google Scholar
  4. Bridges, J.C., Schmitz, B., Hutchison, R., et al., Petrographic Classification of Middle Ordovician Fossil Meteorites from Sweden, Meteorit. Planet. Sci., 2007, vol. 42, pp. 1781–1789.ADSCrossRefGoogle Scholar
  5. Cronholm, A. and Schmitz, B., Extraterrestrial Chromite Distribution across the Mid-Ordovician Puxi River Section, Central China: Evidence for a Global Major Spike in Flux of L-Chondritic Matter, Icarus, 2010, vol. 208, pp. 36–48.ADSCrossRefGoogle Scholar
  6. Dredge, I., Parbell, J., Lindgren, P., and Bowden, S., Elevated Flux of Cosmic Spherules (Micrometeorites) in Ordovician Rocks of the Durness Group, NW Scotland, Scottish J. Geol., 2010, vol. 46, pp. 7–16.CrossRefGoogle Scholar
  7. Heck, P.R., Schmitz, B., Baur, H., et al., Fast Delivery of Meteorites to Earth after a Major Asteroid Collision, Nature, 2004, vol. 430, pp. 323–325.ADSCrossRefGoogle Scholar
  8. Heck, P.R., Schmitz, B., Baur, H., and Wieler, R., Noble Gases in Fossil Micrometeorites and Meteorites from 470 Myr Old Sediments from Southern Sweden and New Evidence for the L Chondrite Parent Body Breakup Event, Meteorit. Planet. Sci., 2008, vol. 43, pp. 517–528.ADSCrossRefGoogle Scholar
  9. Heck, P.R., Schmitz, B., Meier, M.M.M., and Wieler, R., Fossil Meteorites in Ordovician Sediments from Sweden are not Redistributed Meteorites from a Single Fall, Proc. 41st Lunar and Planet. Sci. Conf., Houston: Lunar and Planet Inst., 2010. Abstract no. 1001.Google Scholar
  10. Korochantsev, A.V., Lorenz, C.A., Ivanova, M.A., et al., Sediment-Dispersed Extraterrestrial Chromite in Ordovician Limestone from Russia, Proc. XL Lunar and Planet. Sci. Conf., Houston: Lunar and Planet Inst., 2009. Abstract no. 1101.Google Scholar
  11. Korochantseva, E.V., Trieloff, M., Lorenz, C.A., et al., L-Chondrite Asteroid Breakup Tied to Ordovician Meteorite Shower by Multiple Isochron Ar-40-Ar-39 Dating, Meteorit. Planet. Sci., 2007, vol. 42, pp. 113–130.ADSCrossRefGoogle Scholar
  12. Meier, M.M.M., Schmitz, B., Baur, H., and Wieler, R., Noble Gases in Individual L Chondritic Micrometeorites Preserved in an Ordovician Limestone, Earth Planet. Sci. Lett., 2010, vol. 290, pp. 54–63.ADSCrossRefGoogle Scholar
  13. Schmitz, B. and Häggström, T., Extraterrestrial Chromite in Middle Ordovician Marine Limestone at Kinnekulle, Southern Sweden-Traces of a Major Asteroid Breakup Event, Meteorit. Planet. Sci., 2006, vol. 41, pp. 455–466.ADSCrossRefGoogle Scholar
  14. Schmitz, B., Tassinari, M., and Peucker-Ehrenbrink, B., A Rain of Ordinary Chondritic Meteorites in the Early Ordovician, Earth Planet. Sci. Lett., 2001, vol. 194, pp. 1–15.ADSCrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • R. Wieler
    • 1
    Email author
  • C. Alwmark
    • 1
    • 4
  • P. R. Heck
    • 2
    • 3
  • M. M. M. Meier
    • 1
  • B. Schmitz
    • 4
  1. 1.Earth Sciences, NW C84ETH ZurichZurichSwitzerland
  2. 2.Robert A. Pritzker Center for Meteoritics and Polar Studies, Dept. of GeologyThe Field Museum of Natural HistoryChicagoUSA
  3. 3.Chicago Center for CosmochemistryUniversity of ChicagoChicagoUSA
  4. 4.Dept. of GeologyLund UniversityLundSweden

Personalised recommendations