The Troup, Texas, meteorite

The Broken Belt: Meteorite Concentrations

Introduction: Since the first Antarctic meteorite concentrations were discovered more than 25 years ago, many theories regarding the role of iceflow in the production of meteorite concentrations have been put forward , and most agree on the basic principles [1-3]. These models suggest that as the East Antarctic icesheet flows toward the margins of the continent, meteorites randomly located with...

Meteorite studies

eteorites yield a wealth of information concerning Solar System origin, geochemical evolution of primitive parent objects, and irradiation histories of material in space. Since the numerous (approximately 16,000) antarctic meteorites include many of rare or unique types, current extraterrestrial materials research attention focuses on this population. Antarctic meteorites also have the potentia...

Carbonates in the Martian meteorite

Despite evidence for liquid water at the surface of Mars during the Noachian epoch, the temperature of early aqueous environments has been impossible to establish, raising questions of whether the surface of Mars was ever warmer than today. We address this problem by determining the precipitation temperature of secondary carbonate minerals preserved in the oldest known sample of Mars’ crust—the...

Extraterrestrial nucleobases in the Murchison meteorite

Article history: Carbon-rich meteorites, car Received 26 October 2007 Received in revised form 7 March 2008 Accepted 11 March 2008 Available online 20 March 2008 Editor: R.D. van der Hilst

Educational Meteorite Thin Sections