Planetary Science Research Discoveries

HOT IDEAposted September 30, 2002

feldspar grain

Using Aluminum-26 as a Clock for Early Solar System Events

--- The radioactive decay of Aluminum-26 records a detailed record of events in the early solar system.

Written by Ernst Zinner
Washington University, St. Louis, MO

Technical References List

Amelin Y., Krot A. N., Hutcheon I. D., and Ulyanov A. A. (2002) Lead isotopic ages of chondrules and calcium-aluminum-rich inclusions. Science, v. 297, p. 1678-1683.

Gilmour J. (2002) The solar system's first clocks. Science, v. 297, p. 1658-1659.

Göpel C., Manhés G., and Allégre C. (1994) U-Pb systematics of phosphates from equilibrated ordinary chondrites. Earth Planet. Sci. Lett., v. 121, p. 153-171.

Lee T., Papanastassiou D. A., and Wasserburg G. J. (1976) Demonstration of 26Mg excess in Allende and evidence for 26Al. Geophys. Res. Lett., v. 3, p. 41-44.

Lipschutz M. E., Gaffey M. E., and Pellas P. (1989) Meteoritic parent bodies: nature, number, size and relation to present-day asteroids. In Asteroids II, ed. (eds. R. P. Binzel, T. Gehrels and M. S. Matthews), Univ. of Arizona Press, Tucson, p. 740-778.

MacPherson G. J., Davis A. M., and Zinner E. K. (1995) The distribution of aluminum-26 in the early Solar System-A reappraisal. Meteoritics, v. 30, p. 365-386.

Marhas K.K., Goswami J. N., and Davis A. M. (2002) A limit on the energetic particle irradiation of the solar nebula. Meteoritics & Planet. Sci. , v. 37, p. A94.

McKeegan K. D., Chaussidon M., and Robert F. (2000) Incorporation of short-lived 10Be in a calcium-aluminum-rich inclusion from the Allende meteorite. Science, v. 289, p. 1334-1337.

Pellas P. and Storzer D. (1981) 244Pu fission track thermometry and its application to stony meteorites. Proc. R. Soc. Lond., v. A374, p. 253-270.

Shu F. H., Shang H., Gounelle M., Glassgold A. E., and Lee T. (2001) The Origin of Chondrules and Refractory Inclusions in Chondritic Meteorites. Astrophys. J., v. 548, p. 1029-1050.

Return to "Using Aluminum-26 as a Clock for Early Solar System Events."