Skip to main content
Article thumbnail
Location of Repository

STONE-6 experiment: testing the survival of microfossils in martian analogues

By F. Westall, J. -m, F. Br, R. Demets, Centre De Biophysique Moléculaire and Upr Cnrs

Abstract

The oldest traces of life on Earth occur in cherts (silicified volcanic silts and sands) that were deposited in coastal environments ∼3.5 billion years ago [1, 2, 3, 4, 5, 6]. These microfossils are the remains of relatively evolved organisms, implying that life had to have appeared much earlier [6]. However, studies related to the origin of life are hampered by the fact that suitable rocks dating from the first billion years are lacking on Earth, since older materials are too heavily metamorphosed or have been destroyed by plate tectonics. Investigations are now focussed on the search for older microfossils on other planets and, in particular, on Mars. Mars does not appear to have undergone plate tectonic activity as on Earth and, if life appeared on that planet, its fossilised traces could be found embedded in rocks from th

Year: 2010
OAI identifier: oai:CiteSeerX.psu:10.1.1.161.9520
Provided by: CiteSeerX
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://citeseerx.ist.psu.edu/v... (external link)
  • http://www.lpi.usra.edu/meetin... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.