Abstract
In this work, studies on relationships of chemical compositions between fusion crust and nucleus in iron spherules are reported. More than 10% of the iron spherules which were picked out from deep sea sediment, have cores and crusts. We were able to divide three of them into cores and crusts. Each cores and crusts were analyzed individually by INAA. The core mainly consists of iron and nickel. Other trace elements, especially noble metal Au and Ir were concentrated in the core. The mechanism of core formation in the iron spherules shows us the origin of them.
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References
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© 1991 Springer Science+Business Media Dordrecht
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Nogami, K., Misawa, K., Omori, R., Jianguo, M., Yamakoshi, K. (1991). Noble Metal Enrichments in Cosmic Spherules. In: Levasseur-Regourd, A.C., Hasegawa, H. (eds) Origin and Evolution of Interplanetary Dust. Astrophysics and Space Science Library, vol 173. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3640-2_22
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DOI: https://doi.org/10.1007/978-94-011-3640-2_22
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-5616-8
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