Palaeoseismic deformations in the Eastern Baltic region (Kaliningrad District of Russia)

The article presents new data on sedimentological structures, which have been discovered at the Ryadino archaeological excavation in the northeast of the Kaliningrad District of Russia (the Šešupė River Valley). Tongue-shaped and domeshaped diapir-like structures indicate liquefaction-induced featur...

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Bibliographic Details
Published in:Estonian Journal of Earth Sciences
Main Authors: Druzhinina, Olga, Bitinas, Albertas, Molodkov, Anatoly, Kolesnik, Tatyana
Format: Article in Journal/Newspaper
Language:Estonian
English
Published: 2017
Subjects:
Palaeoseismicity
Liquefaction
Soft-sediment deformation structures
Glacio-isostatic rebound
Šešupė River valley
Ida
Fennoscandian
Ice Sheet
Online Access:http://ku.lvb.lt/KU:ELABAPDB23232669&prefLang=en_US
Description
Summary:The article presents new data on sedimentological structures, which have been discovered at the Ryadino archaeological excavation in the northeast of the Kaliningrad District of Russia (the Šešupė River Valley). Tongue-shaped and domeshaped diapir-like structures indicate liquefaction-induced features. As the most plausible reason, the earthquake-induced shaking is discussed. A preliminary estimation of the time interval for the seismic event covers the period from the early up to the late Holocene. The reasons for seismic activity in this region can be related to neotectonic movements (including glacio-isostatic rebound) as recorded in the southeastern Baltic Sea area of the Fennoscandian ice sheet margin zone. The relation between a palaeoseismic event and the essential changes in the hydrographic network in the region is also discussed.

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