Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling
This work investigates how peatlands can be used as archives of past environmental conditions to record changes in atmospheric deposition of some (especially lithophile and chalcophile) elements and any water–rock–organic matter interactions followed by the sedimentation or leaching of others. We ha...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/16/3/428 |
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| author | Olga Shvartseva Olga Gaskova Andrey Yurtaev Anatoly Boguslavsky Marina Kolpakova Daria Mashkova |
| author_facet | Olga Shvartseva Olga Gaskova Andrey Yurtaev Anatoly Boguslavsky Marina Kolpakova Daria Mashkova |
| author_sort | Olga Shvartseva |
| collection | DOAJ |
| description | This work investigates how peatlands can be used as archives of past environmental conditions to record changes in atmospheric deposition of some (especially lithophile and chalcophile) elements and any water–rock–organic matter interactions followed by the sedimentation or leaching of others. We have provided a detailed description of both the distribution of various groups of elements and their chemical species in the entire depth of peat deposits. The study analyzes the features of the peat sediment formation and element distribution in the 0–310 cm depth core sample of peat deposits of the Ubinskoye peat bog located in the forest-steppe zone of Western Siberia. The study reveals a profound diagenetic transformation of water and peat chemical composition. Element speciation investigated using the modified Tessier sequential extraction procedure showed the vertical transition of an oxidative geochemical environment to a reducing one with the formation of geochemical barriers for variably valent elements. Computer modeling calculations of saturation indices of pore solutions in relation to a number of minerals allowed us to estimate the degree of equilibrium of the system and the direction of its transformation. Early diagenetic processes lead to the deposition of authigenic minerals. Therefore, barite forms on the redox line, while pyrite is found in the reducing environment. With depth, the content of Ca, Mg and Sr increases, which leads to the formation of authigenic carbonates. |
| first_indexed | 2024-03-08T03:47:08Z |
| format | Article |
| id | doaj.art-b44a6a1de2a64f75a49c2cdf4aa918d4 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-08T03:47:08Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-b44a6a1de2a64f75a49c2cdf4aa918d42024-02-09T15:24:36ZengMDPI AGWater2073-44412024-01-0116342810.3390/w16030428Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer ModelingOlga Shvartseva0Olga Gaskova1Andrey Yurtaev2Anatoly Boguslavsky3Marina Kolpakova4Daria Mashkova5Laboratory of Geological and Hydrogeological Support for the Development of Hydrocarbon Fields, Industrial University of Tyumen, 56 Volodarsky st., Tyumen 625003, RussiaV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Science, 3 Prospect Academician Koptyug, Novosibirsk 630090, RussiaInternational Integrated Research Laboratory for Climate Change, Land Use and Biodiversity, X-BIO Institute, University of Tyumen, 6 Volodarsky st., Tyumen 625003, RussiaV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Science, 3 Prospect Academician Koptyug, Novosibirsk 630090, RussiaV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Science, 3 Prospect Academician Koptyug, Novosibirsk 630090, RussiaLaboratory of Geological and Hydrogeological Support for the Development of Hydrocarbon Fields, Industrial University of Tyumen, 56 Volodarsky st., Tyumen 625003, RussiaThis work investigates how peatlands can be used as archives of past environmental conditions to record changes in atmospheric deposition of some (especially lithophile and chalcophile) elements and any water–rock–organic matter interactions followed by the sedimentation or leaching of others. We have provided a detailed description of both the distribution of various groups of elements and their chemical species in the entire depth of peat deposits. The study analyzes the features of the peat sediment formation and element distribution in the 0–310 cm depth core sample of peat deposits of the Ubinskoye peat bog located in the forest-steppe zone of Western Siberia. The study reveals a profound diagenetic transformation of water and peat chemical composition. Element speciation investigated using the modified Tessier sequential extraction procedure showed the vertical transition of an oxidative geochemical environment to a reducing one with the formation of geochemical barriers for variably valent elements. Computer modeling calculations of saturation indices of pore solutions in relation to a number of minerals allowed us to estimate the degree of equilibrium of the system and the direction of its transformation. Early diagenetic processes lead to the deposition of authigenic minerals. Therefore, barite forms on the redox line, while pyrite is found in the reducing environment. With depth, the content of Ca, Mg and Sr increases, which leads to the formation of authigenic carbonates.https://www.mdpi.com/2073-4441/16/3/428peat depositselement distributiongeochemical profileauthigenic mineral formationwater–rock–organic matter interactiondiagenesis |
| spellingShingle | Olga Shvartseva Olga Gaskova Andrey Yurtaev Anatoly Boguslavsky Marina Kolpakova Daria Mashkova Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling Water peat deposits element distribution geochemical profile authigenic mineral formation water–rock–organic matter interaction diagenesis |
| title | Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling |
| title_full | Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling |
| title_fullStr | Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling |
| title_full_unstemmed | Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling |
| title_short | Water–Rock–Organic Matter Interactions in Wetland Ecosystem: Hydrogeochemical Investigation and Computer Modeling |
| title_sort | water rock organic matter interactions in wetland ecosystem hydrogeochemical investigation and computer modeling |
| topic | peat deposits element distribution geochemical profile authigenic mineral formation water–rock–organic matter interaction diagenesis |
| url | https://www.mdpi.com/2073-4441/16/3/428 |
| work_keys_str_mv | AT olgashvartseva waterrockorganicmatterinteractionsinwetlandecosystemhydrogeochemicalinvestigationandcomputermodeling AT olgagaskova waterrockorganicmatterinteractionsinwetlandecosystemhydrogeochemicalinvestigationandcomputermodeling AT andreyyurtaev waterrockorganicmatterinteractionsinwetlandecosystemhydrogeochemicalinvestigationandcomputermodeling AT anatolyboguslavsky waterrockorganicmatterinteractionsinwetlandecosystemhydrogeochemicalinvestigationandcomputermodeling AT marinakolpakova waterrockorganicmatterinteractionsinwetlandecosystemhydrogeochemicalinvestigationandcomputermodeling AT dariamashkova waterrockorganicmatterinteractionsinwetlandecosystemhydrogeochemicalinvestigationandcomputermodeling |