NDLI: Isotopic evidence for a martian regolith component in martian meteorites

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Isotopic evidence for a martian regolith component in martian meteorites

Content Provider	NASA Technical Reports Server (NTRS)
Author	Nyquist, L. E. Garrison, D. H. Bogard, D. D. Rao, M. N. Sutton, S.
Copyright Year	2009
Description	Noble gas measurements in gas-rich impact-melt (GRIM) glasses in EET79001 shergottite showed that their elemental and isotopic composition is similar to that of the Martian atmosphere [1-3]. The GRIM glasses contain large amounts of Martian atmospheric gases. Those measurements further suggested that the Kr isotopic composition of Martian atmosphere is approximately similar to that of solar Kr. The (80)Kr(sub n) - (80)Kr(sub M) mixing ratio in the Martian atmosphere reported here is approximately 3%. These neutron-capture reactions presumably occurred in the glass-precursor regolith materials containing Sm- and Br- bearing mineral phases near the EET79001/ Shergotty sites on Mars. The irradiated materials were mobilized into host rock voids either during shock-melting or possibly by earlier aeolian / fluvial activity.
File Size	201625
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20090006828
Archival Resource Key	ark:/13960/t4qk2d742
Language	English
Publisher Date	2009-03-23
Access Restriction	Open
Subject Keyword	Lunar And Planetary Science And Exploration Shergottites Planetary Geology Glass Meteoritic Composition Meteorite Parent Bodies Mars Atmosphere Regolith Rare Gases Snc Meteorites Krypton Isotopes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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