Llorca, J.; Casanova, I.; Trigo-Rodriguez, J. M.; Madiedo, J.; Roszjar, J.; Bischoff, A.; Ott, U.; Franchi, I. A.; Greenwood, R. C. and Laubenstein, M.
(2009).
| DOI (Digital Object Identifier) Link: | https://doi.org/10.1111/j.1945-5100.2009.tb00725.x |
|---|---|
| Google Scholar: | Look up in Google Scholar |
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.
| Item Type: | Journal Item |
|---|---|
| Copyright Holders: | 2009 The Meteoritical Society |
| ISSN: | 1086-9379 |
| Keywords: | eucrite; radionuclides; meteorites; falls, HED meteorites |
| Academic Unit/School: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences Faculty of Science, Technology, Engineering and Mathematics (STEM) |
| Item ID: | 21330 |
| Depositing User: | Richard Greenwood |
| Date Deposited: | 14 May 2010 12:43 |
| Last Modified: | 07 Dec 2018 09:35 |
| URI: | http://oro.open.ac.uk/id/eprint/21330 |
| Share this page: |     |
Metrics
Altmetrics from Altmetric | Citations from Dimensions |
CORE (COnnecting REpositories)
CORE (COnnecting REpositories)