Other
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000lpico.997...25c&link_type=abstract
Workshop on Extraterrestrial Materials from Cold and Hot Deserts, p. 25
Other
Meteorites, Shergottites, Chemical Effects, Deserts, Antarctic Regions, Chronology, Petrogenesis
Scientific paper
During the last three decades, many cosmochemical studies have been stimulated by the recovery of large numbers of meteorites from Antarctica. Similarly, the more recent discoveries of meteorites in hot deserts significantly increase the number of known meteorites. It is likely that new meteorite types will be found in these hot deserts and that the number of rare meteorites that can be studied in the laboratory using an array of state of the art techniques will be expanded. However, meteorites found in both cold and hot deserts have much longer terrestrial ages than others and, thus, it is critical to ascertain whether their properties reflect processes that occurred prior to their fall on earth or whether some of their characteristics have been modified by their extensive residence on our planet. Here, we study the microdistribution of lanthanides (REE) and use them as indicators of terrestrial alteration. These elements are important because they are commonly used to decipher the petrogenesis and chronology of meteorites.
Crozaz Ghislaine
Wadhwa Meenakshi
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