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In search for fingerprints of an extraterrestrial event: Trace element characteristics of sediments from the lake Medvedevskoye (Karelian Isthmus,Russia) |
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| Authors: | A V Andronikov D A Subetto D S Lauretta I E Andronikova D A Drosenko D D Kuznetsov T V Sapelko L S Syrykh |
| Institution: | 1. Lunar and Planetary Laboratory, University of Arizona, Tucson, USA 2. Alexander Herzen State Pedagogical University of Russia, St. Petersburg, Russia 3. Northern Water Problems Institute, Karelian Research Centre, Russian Academy of Sciences, Petrozavodsk, Russia 4. Kazan (Volga Region) Federal University, Kasan, Russia 5. Institute of Limnology, Russian Academy of Science, St. Petersburg, Russia |
| Abstract: | Concentration and distribution of trace elements across the sequence of the Late Pleistocene sediments from the lake Medvedevskoye suggest the addition of materials other than those from a common source for the lake sediments of the region. The sediments of the lake Medvedevskoye carry some geochemical fingerprints which could be related the ET event that occurred at ca. 12.9 ka. Because such fingerprints are extremely subtle, the NW Russia can be considered to be the most remote eastern region of the extent of the Late Pleistocene airborne ET material. The sediments of the lake Medvedevskoye can also contain volcanic material from the eruption of the Laacher See (Germany) volcano and probably from other Late Pleistocene volcanoes of Western Europe and/or Iceland. |
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