Relative age dating inclusions
Johan Villeneuve, Marc Chaussidon, and Guy Libourel (Nancy Université, Nancy, France) have made high precision analyses of aluminum and magnesium isotopes using an ion microprobe.Consistent with previous results, they find that olar System formation was a fast-paced business.
To be useful as a dating tool however, it must be distributed uniformly throughout the Solar System.
But was illeneuve and colleagues used an ion microprobe at the Centre de Recherches Petrographiques et Geochimiques at Nancy Université, Nancy, France, in association with the Centre National de la Recherche Scientifique (CNRS).
They made high-precision analyses of aluminum and magnesium isotopes, essential because Mg).
Astronomical observations indicate that such stars pass through a stage in which they lose mass--up to an Earth mass per day!
-- rapidly by blowing it into space at a couple of thousand kilometers per hour. One type of massive star is called a Wolf-Rayet star (named after the discoverers).The array defines an uncertainly given by the red band around the dark line.