Effects of terrestrial alteration on meteorites from cold and hot deserts

Vinciane Debaille, Ryoga Maeda, Hamed Pourkhorsandi, Steven Goderis, Geneviève Hublet, Philippe Claeys

Research output: Chapter in Book/Report/Conference proceedingMeeting abstract (Book)

Abstract

Meteorites are invaluable tools to study the formation and the evolution of the solar system. However, by their fragile nature, and notably the presence of Fe-Ni alloys, they can degrade very fast at the surface of the Earth. This underlines the importance of return sample mission, but also urges us to investigate how meteorites can be affected by their presence on Earth before being collected.
Alteration will notably modify the trace element contents and sometimes isotope ratios as well. Among trace elements, rare earth elements (REE) are particularly important as those elements are used as diagnostic features for planetary differentiation, and Sm-Nd and Lu-Hf radioactive chronometers are heavily used to date geological processes. Here we synthesize REE and isotopic data obtained on ordinary chondrites from both cold (Antarctica) and hot (Sahara, Lut and Atacama) deserts.
Original languageEnglish
Title of host publicationGoldschmidt 2022 Abstract Volume
Subtitle of host publicationhttps://goldschmidt.info/conferencesView
PublisherEuropean Association of Geochemistry
Number of pages1
Volume32
Publication statusPublished - 30 May 2022
EventGoldschmidt2022 - The Hawai'i Convention Center, Honolulu, United States
Duration: 10 Jul 202215 Jul 2022
https://2022.goldschmidt.info/goldschmidt/2022/meetingapp.cgi/Home/0

Conference

ConferenceGoldschmidt2022
Country/TerritoryUnited States
CityHonolulu
Period10/07/2215/07/22
Internet address

Keywords

  • Meteorites
  • Weathering

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