Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Shergotty

Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_5217-1

Definition

Shergotty is a 5 kg Martian meteorite discovered in 1865 in Shergotty (now Sherghati), India. It also names a subgroup of the SNC meteorites, the shergottites, representing 78 % of the Martian meteorites. Its age has been dated to ca. 165 Ma by most isotopic systems, but according to the Pb-Pb dating, it can be as old as 4.3 Ga. Although shergottite source craters have been identified on young terrains in Tharsis and Elysium provinces, the Mojave crater, formed on a 4.3 Ga old terrain, has been recently found to match the mineralogy of Shergotty. Petrologically, Shergotty is a basaltic sample (containing pyroxene and plagioclase but no olivine or chromite), enriched in trace elements.

See Also

Keywords

Isotopic Ratio Bioorganic Chemistry Isotopic Fractionation Isotopic System Impact Crater 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.German Aerospace Center (DLR), Institute of Planetary ResearchBerlinGermany