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4. A Chemical and Textural Comparison between Carbonaceous Chondrites and Interplanetary Dust

Published online by Cambridge University Press:  12 April 2016

D. E. Brownlee ,
R. S. Rajan  and
D. A. Tomandl

Abstract

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Interplanetary dust probably has a cometary origin. Collectible samples of this material are likely to be more representative of the meteoroid complex than are meteorites. Since 1974, NASA U-2 spacecraft has been able to collect over 200 interplanetary particles in the stratosphere. Roughly 10% have spheroidal shapes indicating previous melting. The rest seems to come from the gentle fragmentation of a single type of parent-body material: a black aggregate of grains mainly 1000 A in size, whose properties are closely similar to C1 and C2 chondritic material.

Type
Part III. Meteors and Meteoroids
Information
International Astronomical Union Colloquium , Volume 39: Comets, Asteroids, Meteorites: Interrelations, Evolution and Origins , December 1977 , pp. 137 - 141
Copyright
Copyright © A.H. Delsemme 1977

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