Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46545 10.2205/2020ES000719 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ The role of fluids in the chemical composition of the upper holocene sediment layer in the russian sector of the South-East Baltic The role of fluids in the chemical composition of the upper holocene sediment layer in the russian sector of the South-East Baltic Krek Alexander Krek Alexander av_krek_ne@mail.ru Krechik Viktor Krechik Viktor Danchenkov Aleksandr Danchenkov Aleksandr Mikhnevich Galina Mikhnevich Galina Shirshov Institute of Oceanology RAS ru Shirshov Institute of Oceanology RAS ru Shirshov Institute of Oceanology RAS ru Shirshov Institute of Oceanology RAS ru Shirshov Institute of Oceanology RAS and Immanuel Kant Baltic Federal University ru Shirshov Institute of Oceanology RAS and Immanuel Kant Baltic Federal University ru Immanuel Kant Baltic Federal University ru Immanuel Kant Baltic Federal University ru 20 6 29 10 2021 https://rjes.ru/en/nauka/article/46545/view

An analysis of the of the chemical composition of the upper slimy precipitate layer in the Gdansk Deep demonstrated increased concentrations of Ca, Mg, K, and Na in areas associated with tectonic faults. A cluster analysis of sediment layers, with a resolution of 1 cm, revealed an alternation of layers in the pockmark with a shortening of cluster bonds between the marker elements, indicating that the groundwater enters the sedimentary strata.

An analysis of the of the chemical composition of the upper slimy precipitate layer in the Gdansk Deep demonstrated increased concentrations of Ca, Mg, K, and Na in areas associated with tectonic faults. A cluster analysis of sediment layers, with a resolution of 1 cm, revealed an alternation of layers in the pockmark with a shortening of cluster bonds between the marker elements, indicating that the groundwater enters the sedimentary strata.

 South-East Baltic bottom sediments cluster analysis groundwater South-East Baltic bottom sediments cluster analysis groundwater The reported study was funded by RFBR and Government of the Kaliningrad region according to the research project No. 19-45-390007. Bottom sediments sample collection was done with a support of the state assignment of IO RAS (Theme No. 0149-2019-0013).

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