The Blake geomagnetic excursion recorded in the Mikulino Interglacial sediments of the Neva Lowland

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We present the first results of a detailed rock magnetic and paleomagnetic research of the Mga marine interglacial sediments of the Mikulino (Eemian) Interglacial (the Upper Pleistocene) in the Etalon section (former Sverdlov Factory, Leningrad Region). The Blake geomagnetic excursion was determined in the upper part of the Mga formation according to a shallow inclination of the characteristic remanent magnetization (ChRM) component. Age of the Blake excursion was obtained as 117 ± 7 ka applying optically stimulated luminescence (OSL) dating. The results obtained are in good agreement with other Blake Event records. The ChRM in the Mga sediments is related to syngenetically formed biogenic greigite produced by magnetotactic bacteria.

作者简介

V. Dudanova

Lomonosov Moscow State University; Schmidt Institute of Physics of the Earth, Russian Academy of Sciences

Email: roman.veselovskiy@ya.ru

Geological faculty

俄罗斯联邦, Moscow; Moscow

R. Veselovskiy

Lomonosov Moscow State University; Schmidt Institute of Physics of the Earth, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: roman.veselovskiy@ya.ru

Geological faculty

俄罗斯联邦, Moscow; Moscow

M. Ruchkin

Saint Petersburg State University; Karpinsky Russian Geological Research Institute

Email: roman.veselovskiy@ya.ru

Institute of Earth Sciences

俄罗斯联邦, Saint Petersburg; Saint Petersburg

M. Sheetov

Karpinsky Russian Geological Research Institute

Email: roman.veselovskiy@ya.ru
俄罗斯联邦, Saint Petersburg

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