Unique phenomenon of the accumulation of terrestrial metal iron particles in lacustrine deposits: Zhombolok volcanic region, East Sayan

The native iron particles that were previously detected by thermomagnetic and microprobe analyses in the sediments of different age in many regions of the world are of extraterrestrial origin. The similarity in the compositions, grain shapes, and sizes observed in the extraterrestrial and terrestria...

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Bibliographic Details
Published in:Izvestiya. Physics of the solid earth 2018, Vol.54 (1), p.106-120
Main Authors: Pechersky, D. M., Kazanskii, A. Yu, Markov, G. P., Tselmovich, V. A., Shchetnikov, A. A.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Extraterrestrial materials
Geophysics/Geodesy
Iron
Iron and steel making
Lacustrine sedimentation
Lacustrine sediments
Lake deposits
Metals
Planet formation
Planets
Sediment
Sediments
Spatial distribution
Volcanic deposits
Volcanic eruptions
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Summary:The native iron particles that were previously detected by thermomagnetic and microprobe analyses in the sediments of different age in many regions of the world are of extraterrestrial origin. The similarity in the compositions, grain shapes, and sizes observed in the extraterrestrial and terrestrial particles of native iron testifies to the common production conditions of iron particles during the formation of planets. In this paper, the single finding of terrestrial iron in the lacustrine sediments of the Zhombolok volcanic region, East Sayan, is discussed. The uniqueness of the results indicates that the spatial distribution of the particles of native iron is limited to a fairly narrow area around their source—volcanic eruption or/and the fall of a large meteorite.
ISSN:1069-3513
1555-6506
DOI:10.1134/S1069351318010123