The puerto lápice eucrite

Jordi Llorca, Ignasi Casanova, Josep M.Trigo Rodríguez, José M. Madiedo, Julia Roszjar, Addi Bischoff, Ulrich Ott, Ian A. Franchi, Richard C. Greenwood, Matthias Laubenstein

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Puerto Lápice is a new eucrite fall (Castilla-La Mancha, Spain, 10 May 2007). In this paper, we report its detailed petrography, magnetic characterization, mineral and bulk chemistry, oxygen and noble gas isotope systematics, and radionuclide data. Study of four thin sections from two different specimens reveal that the meteorite is brecciated in nature, and it contains basaltic and granulitic clasts, as well as recrystallized impact melt and breccia fragments. Shock veins are ubiquitous and show evidence of at least three different shock events. Bulk chemical analyses suggest that Puerto Lápice belongs to the main group of basaltic eucrites, although it has a significantly higher Cr content. Oxygen isotopes also confirm that the meteorite is a normal member of the HED suite. Noble gas abundances show typical patterns, with dominant cosmogenic and radiogenic contributions, and indicate an average exposure age of 19 ± 2 Ma, and a Pu-fission Xe age well within typical eucrite values. Cosmogenic radionuclides suggest a preatmospheric size of about 20-30 cm in diameter.

Original languageEnglish
Pages (from-to)159-174
Number of pages16
JournalMeteoritics and Planetary Science
Volume44
Issue number2
DOIs
Publication statusPublished - Feb 1 2009

ASJC Scopus subject areas

  • Geophysics
  • Space and Planetary Science

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    Llorca, J., Casanova, I., Rodríguez, J. M. T., Madiedo, J. M., Roszjar, J., Bischoff, A., Ott, U., Franchi, I. A., Greenwood, R. C., & Laubenstein, M. (2009). The puerto lápice eucrite. Meteoritics and Planetary Science, 44(2), 159-174. https://doi.org/10.1111/j.1945-5100.2009.tb00725.x