Structure of Late Pleistocene and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia)
Here, we present new results from seismic, geological, and geochemical studies conducted in 2015–2019 in the Petrozavodsk Bay of Lake Onego, NW Russia. The aims of these investigations were to (i) to characterize the structure of Quaternary deposits and (ii) provide new evidence of modern geodynamic...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/10/11/964 |
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| author | Dmitry Subetto Alexandr Rybalko Vera Strakhovenko Natalia Belkina Mikhail Tokarev Maksim Potakhin Mikhail Aleshin Pavel Belyaev Nathalie Dubois Vladislav Kuznetzov Dmitry Korost Andrei Loktev Natalia Shalaeva Alexandra Kiskina Natalia Kostromina Yuriy Kublitskiy Alexander Orlov |
| author_facet | Dmitry Subetto Alexandr Rybalko Vera Strakhovenko Natalia Belkina Mikhail Tokarev Maksim Potakhin Mikhail Aleshin Pavel Belyaev Nathalie Dubois Vladislav Kuznetzov Dmitry Korost Andrei Loktev Natalia Shalaeva Alexandra Kiskina Natalia Kostromina Yuriy Kublitskiy Alexander Orlov |
| author_sort | Dmitry Subetto |
| collection | DOAJ |
| description | Here, we present new results from seismic, geological, and geochemical studies conducted in 2015–2019 in the Petrozavodsk Bay of Lake Onego, NW Russia. The aims of these investigations were to (i) to characterize the structure of Quaternary deposits and (ii) provide new evidence of modern geodynamic movements and gas-seepage in Holocene sediments. The structure of the recovered deposits was composed of lacustrine mud, silt and sands from the Holocene, limno-glacial clays (varved clays) from the Late Glacial–Interglacial Transition, and glacial deposits (till) from the Late Pleistocene. The thickness of these deposits varied in different parts of the bay. Many pockmarks created by gases escaping and reaching sediment-water interface were observed in these deposits. Such pockmarks can play a significant role in the geochemical and biological processes in the bottom sediment surface, and gases that escape might modify the physicochemical characteristics of the environment. |
| first_indexed | 2024-03-10T15:16:56Z |
| format | Article |
| id | doaj.art-7895b6bcb3004a60875fe5134f175df8 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T15:16:56Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-7895b6bcb3004a60875fe5134f175df82023-11-20T18:51:19ZengMDPI AGMinerals2075-163X2020-10-01101196410.3390/min10110964Structure of Late Pleistocene and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia)Dmitry Subetto0Alexandr Rybalko1Vera Strakhovenko2Natalia Belkina3Mikhail Tokarev4Maksim Potakhin5Mikhail Aleshin6Pavel Belyaev7Nathalie Dubois8Vladislav Kuznetzov9Dmitry Korost10Andrei Loktev11Natalia Shalaeva12Alexandra Kiskina13Natalia Kostromina14Yuriy Kublitskiy15Alexander Orlov16Faculty of Geography, Herzen State Pedagogical University of Russia, 191186 Saint Petersburg, RussiaLaboratory of Paleolimnology, Northern Water Problems Institute, Federal Research Centre “Karelian Research Center of the Russian Academy of Sciences”, 185030 Petrozavodsk, RussiaLaboratory of Paleolimnology, Northern Water Problems Institute, Federal Research Centre “Karelian Research Center of the Russian Academy of Sciences”, 185030 Petrozavodsk, RussiaLaboratory of Paleolimnology, Northern Water Problems Institute, Federal Research Centre “Karelian Research Center of the Russian Academy of Sciences”, 185030 Petrozavodsk, RussiaGeological Faculty, Lomonosov Moscow State University, 119991 Moscow, RussiaLaboratory of Paleolimnology, Northern Water Problems Institute, Federal Research Centre “Karelian Research Center of the Russian Academy of Sciences”, 185030 Petrozavodsk, RussiaGeological Faculty, Lomonosov Moscow State University, 119991 Moscow, RussiaLaboratory of Paleolimnology, Northern Water Problems Institute, Federal Research Centre “Karelian Research Center of the Russian Academy of Sciences”, 185030 Petrozavodsk, RussiaDepartment of Earth Sciences, ETH Zurich, 8092 Zurich, SwitzerlandFaculty of Geography, Herzen State Pedagogical University of Russia, 191186 Saint Petersburg, RussiaGeological Faculty, Lomonosov Moscow State University, 119991 Moscow, RussiaMarine Investigation Centre (MIC), Lomonosov Moscow State University, 119991 Moscow, RussiaGeological Faculty, Lomonosov Moscow State University, 119991 Moscow, RussiaLaboratory of Paleolimnology, Northern Water Problems Institute, Federal Research Centre “Karelian Research Center of the Russian Academy of Sciences”, 185030 Petrozavodsk, RussiaInstitute of Earth Sciences, Saint Petersburg State University, 199034 Saint Petersburg, RussiaFaculty of Geography, Herzen State Pedagogical University of Russia, 191186 Saint Petersburg, RussiaFaculty of Geography, Herzen State Pedagogical University of Russia, 191186 Saint Petersburg, RussiaHere, we present new results from seismic, geological, and geochemical studies conducted in 2015–2019 in the Petrozavodsk Bay of Lake Onego, NW Russia. The aims of these investigations were to (i) to characterize the structure of Quaternary deposits and (ii) provide new evidence of modern geodynamic movements and gas-seepage in Holocene sediments. The structure of the recovered deposits was composed of lacustrine mud, silt and sands from the Holocene, limno-glacial clays (varved clays) from the Late Glacial–Interglacial Transition, and glacial deposits (till) from the Late Pleistocene. The thickness of these deposits varied in different parts of the bay. Many pockmarks created by gases escaping and reaching sediment-water interface were observed in these deposits. Such pockmarks can play a significant role in the geochemical and biological processes in the bottom sediment surface, and gases that escape might modify the physicochemical characteristics of the environment.https://www.mdpi.com/2075-163X/10/11/964Lake Onegobottom sedimentsLate PleistoceneHoloceneseismoacoustic profilinggas in sediments |
| spellingShingle | Dmitry Subetto Alexandr Rybalko Vera Strakhovenko Natalia Belkina Mikhail Tokarev Maksim Potakhin Mikhail Aleshin Pavel Belyaev Nathalie Dubois Vladislav Kuznetzov Dmitry Korost Andrei Loktev Natalia Shalaeva Alexandra Kiskina Natalia Kostromina Yuriy Kublitskiy Alexander Orlov Structure of Late Pleistocene and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia) Minerals Lake Onego bottom sediments Late Pleistocene Holocene seismoacoustic profiling gas in sediments |
| title | Structure of Late Pleistocene and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia) |
| title_full | Structure of Late Pleistocene and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia) |
| title_fullStr | Structure of Late Pleistocene and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia) |
| title_full_unstemmed | Structure of Late Pleistocene and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia) |
| title_short | Structure of Late Pleistocene and Holocene Sediments in the Petrozavodsk Bay, Lake Onego (NW Russia) |
| title_sort | structure of late pleistocene and holocene sediments in the petrozavodsk bay lake onego nw russia |
| topic | Lake Onego bottom sediments Late Pleistocene Holocene seismoacoustic profiling gas in sediments |
| url | https://www.mdpi.com/2075-163X/10/11/964 |
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