INVESTIGADORES
VARELA Maria Eugenia
artículos
Título:
Serie conferencia
Autor/es:
MARIA EUGENIA VARELA
Revista:
REVISTA MEXICANA DE ASTRONOMÃA Y ASTROFÃSICA
Editorial:
UNIV NACIONAL AUTONOMA MEXICO
Referencias:
Lugar: México; Año: 2014 vol. 44 p. 129 - 225
ISSN:
0185-1101
Resumen:
The SNC (Shergotty-Nakhla-Chassigny) group, are achondritic meteorites. Of all SNC meteorites recognized up to date, shergottites are the most abundant group. The petrographic study of Shergotty began several years ago when [1] identified this rock as an extraterrestrial basalt. Oxygen isotopes in SNC meteorites indicate that these rocks are from a single planetary body [2]. Because the abundance patterns of rare gases trapped in glasses from shock melts [3-4] turned out to be very similar to the Martian atmosphere (as analyzed by the Viking landers [5]), the SNC meteorites are believed to originate from Mars [e.g. 6]. Possibly, they were ejected from the Martian surface either in a giant impact or in several impact events [7].
