WESTALL, FRANCES / علوم الأرض / الباحثون

المركز الدولي للبحث العلمي


علوم الأرض / WESTALL, FRANCES



Director of Research
Centre de Biophysique Moléculaire
Equipe Exobiologie (Expansion of present, prebiotic research field of laboratory to bacterial palaeontology, early Earth geological history, Martian geology and potential palaeontology, astronaut training in exobiology)
Orléans, France.

مواضيع البحث

- Earliest life on Earth and its geological context : Field studies of the earliest supracrustal terrains and study of the fossil bacteria from the Early Archaean. Origin of life.

- Search for life on Mars and human exploration of Mars: Bacteriomorph structures in Martian meteorites, future astronaut training with respect to searching for traces of fossil life.


Westall, F. (2004). The geological context for the origin of life and the mineral signatures of fossil life. In The Early Earth and the origin of Life,
H. Martin, M. Gardaud, G. Reisse, B. Barbier (Eds). Springer, Berlin, in press.

Westall, F., Hofmann, B, Brack, B. (2004). Searching for fossil microbial biofilms on Mars: a case study using a 3.46 billionyear old example from the Pilbara in Australia. Proceedings of the Third European Workshop on Exo/Astrobiology Madrid,
Spain 18-20 2003 ESA Spec. Pub. 545, in press.

Westall, F. (2003). Stephen Jay Gould, les procaryotes et leur évolution dans le contexte géologique.
Palevol, 2 , 485-501.

Westall, F., Walsh, M.M. (2003). Fossil biofilms and the search for life on Mars. In Fossil and Recent Biofilms,
eds. W.E. Krumbein,
D. Patterson, G. Zavarzin, Kluwer, Amsterdam, in press.

Westall, F., Folk, R.L. (2003). Exogenous carbonaceous microstructures in Early Archaean cherts and BIFs from the Isua greenstone belt: Implications for the search for life in ancient rocks.
Precambrian Res., 126, 313-330.

Westall, F., Brack, A., Barbier, B., Bertrand, M., Chabin, A. (2002). Early Earth and early life: an extreme environment and extremophiles - application to the search for life on Mars. Proceedings of the Second European Workshop on Exo/Astrobiology Graz,
Austria, 16-19 September 2002, ESA SP-518, pp. 131-136.

Toporski, J.K.W., Steele, A., Westall, F., Avci, R., Martill, D.M., And Mckay, D.S., 2002. In-situ biomarker detection using ToFSIMS
and high resolution electron microscopy imaging of an exceptionally well preserved bacterial biofilm from the 28 million year old Enspel Formation. Geoch. Cosmoch.
Acta, 66, 1773-1791.

Westall, F., De Wit, M.J., Dann, J., Van Der Gaast., S., De Ronde., C., Gerneke., D., (2001). Early Archaean fossil bacteria and
biofilms in hydrothermally-influenced, shallow water sediments, Barberton greenstone belt, South Africa.
Precambrian Res., 106, 93-116.

Gibson, E.K., Mckay, D.S., Thomas-Keprta, K., Wentworth, S.J., Westall., F., Steele, A., Romanek, C.S., Bell, M.S., And Toporski,
J., 2001. Life on Mars: Evaluation of the evidence within Martian meteorites ALH84001, Nakhla and Shertgotty.
Precambrian Research, 106, 13-32.

Toporski, J.K.W., Westall, F., Thomas-Keprta, K.A., Steele, A., And Mckay, D.S. 2001.The simulated silicification of bacteria – new
clues to the modes and timing of bacterial preservation and implications for the search for extraterrestrial microfossils.
Astrobiology, 2,1-25.

Westall, F., Walsh, M.M. (2000). The diversity of fossil microorganisms in Archaean-age rocks. In, Journey to Diverse Microbial Worlds,
Ed. J. Seckbach, Kluwer, Amsterdam, 15-27.

Westall, F., Steele, A., Toporski, J. Walsh, M., Allen, C., Guidry, S., Gibson, E., Mckay, D., Chafetz, H., (2000). Polymeric substances and biofilms as biomarkers in terrestrial materials: Implications for extraterrestrial samples.
J. Geophys. Res. Planets, 105, 24,511-24,527.

Mckinley, J.P., Stevens, T.O. And Westall, F. 2000. Microfossils and paleoenvironments in deep subsurface basalt samples.
Geomicrobiology J., 17, 1-12.

Westall, F., 1999. The nature of fossil bacteria: A guide to the search for extraterrestrial life. Journal of Geophysical Research,
Planets, 104, 16,437-16,451.

Westall, F., Boni, L., And Guerzoni, M.E., 1995. The experimental silicification of microbes. Palaeontology 38, 495-528.

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