PEAT DEPOSITS AS A NEW SOURCE OF PALEOMAGNETIC RECORDS IN THE HOLOCENE AS EXEMPLIFIED BY THE ETRUSSIA EXCURSION

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Abstract

The paper presents the results of microprobe, paleomagnetic and rock magnetic studies on peats from the Tyapka peat section (Khabarovsk region) formed 4 thousand years. Alternating field demagnetization of peats yielded a horizon of 57–109 cm (1833–3083 cal. BP) with negative inclination values of the magnetization vector, which corresponds to the geomagnetic Etrussia excursion. Obtaining relative paleointensity estimates for peats was pioneered, which are consistent with the literature archeomagnetic data for the western part of Eurasia. It was found that the Etrussia excursion took place against the background of increased values of the Earth’s magnetic field, and its duration was ~ 1200 years.

About the authors

A. Yu. Peskov

Kosygin Institute of Tectonics and Geophysics, Far Eastern Branch, Russian Academy of Sciences

Author for correspondence.
Email: peskovitig@yandex.ru
Russian, Khabarovsk

A. N. Didenko

Kosygin Institute of Tectonics and Geophysics, Far Eastern Branch, Russian Academy of Sciences; Geological Institute, Russian Academy of Sciences,

Email: peskovitig@yandex.ru
Russian, Khabarovsk; Russian, Moscow

A. S. Karetnikov

Kosygin Institute of Tectonics and Geophysics, Far Eastern Branch, Russian Academy of Sciences

Email: peskovitig@yandex.ru
Russian, Khabarovsk

M. A. Klimin

Institute of Water and Ecology Problems, Far Eastern Branch, Russian Academy of Sciences

Email: peskovitig@yandex.ru
Russian, Khabarovsk

M. V. Arkhipov

Kosygin Institute of Tectonics and Geophysics, Far Eastern Branch, Russian Academy of Sciences

Email: peskovitig@yandex.ru
Russian, Khabarovsk

N. V. Kozhemyako

Kosygin Institute of Tectonics and Geophysics, Far Eastern Branch, Russian Academy of Sciences

Email: peskovitig@yandex.ru
Russian, Khabarovsk

A. I. Tikhomirova

Kosygin Institute of Tectonics and Geophysics, Far Eastern Branch, Russian Academy of Sciences

Email: peskovitig@yandex.ru
Russian, Khabarovsk

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Copyright (c) 2023 А.Ю. Песков, А.Н. Диденко, А.С. Каретников, М.А. Климин, М.В. Архипов, Н.В. Кожемяко, А.И. Тихомирова

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