Ghislaine Crozaz

Office contact information

Ghislaine Crozaz
Laboratory for Space Sciences
Physics Department, CB 1105
Washington University
1 Brookings Drive
St. Louis, MO 63130-4899, USA

Phone in Brussels: 02/660 65 13

Address: 19, av. du Martin-Pecheur, B. 35

1170 Brussels, Belgium

Ph.D., University of Brussels,


Prof. Crozaz is retired and living in Brussels, Belgium

(314) 935-5610

Ghislaine Crozaz received both undergraduate degree and Ph.D. at the University of Brussels, Belgium. Presently, she is Professor Emerita of Geochemistry in the Earth and Planetary Sciences Department of Washington University.


Floss C., Crozaz G., Jolliff B., Benedix G., and Colton S. (2008) Evolution of the winonaite parent body: clues from silicate mineral trace element distributions.  Meteorit. Planet. Sci. 43, 657-674.

Wadhwa M., Crozaz G., and Barrat J-A. (2004) Trace element distributions in the Yamato 000593/000749, NWA 817 and NWA 998 nakhlites: Implications for their petrogenesis and mantle sources on Mars. Antarct. Meteorite Res. 17, 97-116.

Crozaz G., Floss C. and Wadhwa M. (2003) Chemical alteration and REE mobilization in meteorites from hot and cold deserts. Geochim.  Cosmochim. Acta 67, 4727-4741.

Selected Publications

Crozaz is a Fellow of the American Geophysical Union and the Meteoritical Society, a Member of various societies, and has served on many national committees.

Apart from enjoying the thrill of research, she has most enjoyed training, and interacting with, an exciting group of gifted graduate students whose postgraduate accomplishments are for her a constant source of pleasure.

Over the years, her research interests have ranged widely. At a time when women were not yet allowed in Antarctica, she developed a dating method for polar glaciers, based on the radioactive decay of Pb-210, and studied the natural and artificial radioactivity of the atmosphere and its precipitations. This led to the determination of the snow accumulation rates at more than 80 stations on the Antarctic ice sheet, a prerequisite to understanding the dynamics, mass and heat budgets of this continent.

She then analyzed Mn-53 in Antarctic ice to measure the influx of interplanetary dust on Earth. Although determined to investigate meteorites that fascinated her because they contain so many clues as to what happened early in the history of the solar system, she got temporarily sidetracked into studying the Apollo lunar samples and the effects of cosmic ray bombardment to understand the dynamics of the lunar regolith.

The nuclear particle track technique she used for this purpose also allowed her to get constraints on the thermal history of meteorites and to determine U and Th distributions in these objects. Her interest in using trace element distributions and isotopic systematics to decipher the origin and evolution of meteorites was stimulated by the development of the ion microprobe that first allowed to make in-situ measurements on a microscopic scale. Since, she has exploited the capabilities of this instrumentation to study meteorites, lunar and terrestrial samples and... finally got the chance to go to Antarctica and participate in two meteorite recovery expeditions.

During the last two decades of her career, Ghislaine Crozaz was mainly interested in understanding the origin of meteorites of different types. To this end, she and her associates used the capabilities of the ion microprobe to determine the trace element concentrations and the isotopic make up of a variety of meteoritic components.