Twenty-Eight Years of Lunar Meteorites
نویسنده
چکیده
The first meteorite from the Moon was not recognized until 1982, nine years after the last Apollo lunar mission. Since then, a remarkable 66 more have been found and recognized (Fig. 1). Initially, lunar meteorites were found exclusively in Antarctica by organized expeditions sponsored by the Japanese and U.S. governments. Although the rate of discovery in Antarctica has remained relatively constant, about two meteorites every three years, new finds have been dominated by discoveries by private collectors in the deserts of northern Africa and Oman over the past 10 years (Fig. 1).
منابع مشابه
Trace Element Chemistry of Lunar Highland Meteorites from Oman
Introduction: During the last few years, numerous lunar meteorites have been discovered in the Dhofar region of Oman. All of them are lunar highland brec-cias, except for Dhofar 287A, which is a mare basalt. In this paper, we present the first trace-element chemistry of these new lunar highland meteorites: Dhofar 280, 301-310. Mineralogy and petrology of these meteorites have been reported in [...
متن کاملPetrologic Comparisons of Lunar Mare Basalt Meteorites Dh-287A and NWA
Introduction: It is intriguing that the majority of lunar meteorites (~30) have been discovered in the hot deserts of Middle-East and North Africa. In contrast, of 10s of thousands of meteorite finds from Antarctica over 30 years, only a handful (~5) are lunar. This bias towards the lunar meteorite recovery from the hot deserts may be due to the preferential fall of lunar meteorites in these re...
متن کاملEjection (launch) Depths of Lunar Meteorites
More than 130 lunar meteorites have been found in Antarc-tica and other arid regions throughout the world. Even though nearly half of all lunar meteorites are paired falls and the location from which they were launched is unknown, they sample a more extensive area of lunar crust than manned sample returns, thereby providing a vital record of lunar crust materials. To use lunar meteorites to exp...
متن کاملThe Relative Abundance of Recently-launched Meteorites from the Moon
Introduction: It has been known for over 20 years that certain meteorites originated on the moon and Mars. The launch and delivery of these stones is understood qualitatively as a consequence of impact events on those bodies. One of the puzzling features of the sample population is the relative abundance of lunar vs. Martian meteorites. One would think that lunar meteorites should be much more ...
متن کاملMAC88105-A regolith breccia from the lunar highlands: Miner~o~c~ petrological, and geochemical studies*
The new large Iunar meteorite MAC88105 is a dense breccia, with lithic and mineral clasts and fragments set into a welded matrix. It is a regolith breccia which shows some recrystallization and evidence for a late shock event during which anorthositic glass veins were formed. Shock effects (most probably due to the impact ejection from the moon) are present throughout the sample and require a s...
متن کامل