Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26at...24..101k&link_type=abstract
Astronomical and Astrophysical Transactions, vol. 24, Issue 2, p.101-111
Astronomy and Astrophysics
Astronomy
2
Tunguska, Peat, Isotopes, Platinoids, Comets, Carbonaceous Chondrites
Scientific paper
Further evidencies of a cometary nature of the 1908 Tunguska Cosmic Body (TCB) are presented. Earlier in the event layers of the Sphagnum fuscum peat from the explosion area, anomalies, relative to Earth-materials, of the elements H, C, and N—all abundant in comets—have been found [E.W. Kolesnikov, T. Boettger and N.V. Kolesnikova, Planet. Space Sci. 47 905 (1999); E.M. Kolesnikov, G. Longo, T. Boettger, N.V. Kolesnikova, P. Gioacchini, L. Forlani, R. Giampieri and R. Serra, Icarus 161 235 (2003).]. At the present work we revealed a sharp increase of concentrations of platinum group elements (PGE), REE and other elements in the event layers as well. Their ratios point to a cometary nature of the anomalies observed.
Hou Q. L.
Kolesnikov Euginev M.
Kolesnikova Natal'ya V.
Xie Lie-Wen
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