Thermal Properties and Burial Alteration of Deep-Sea Sediments: New Indicators of Oxic−Suboxic Diagenesis
The application of thermal methods, such as Rock−Eval 6 pyrolysis or differential thermal analysis, provides complex information about sediment and rock properties, including thermal behaviour, degree of maturity, alteration of organic matter, and high temperature combustion synthesis mineral produc...
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| Format: | Article |
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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/10/10/901 |
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| author | Łukasz Maciąg Dominik Zawadzki Maciej J. Kotarba Adam Piestrzyński Ryszard A. Kotliński Rafał Wróbel Hieronim Zych |
| author_facet | Łukasz Maciąg Dominik Zawadzki Maciej J. Kotarba Adam Piestrzyński Ryszard A. Kotliński Rafał Wróbel Hieronim Zych |
| author_sort | Łukasz Maciąg |
| collection | DOAJ |
| description | The application of thermal methods, such as Rock−Eval 6 pyrolysis or differential thermal analysis, provides complex information about sediment and rock properties, including thermal behaviour, degree of maturity, alteration of organic matter, and high temperature combustion synthesis mineral products. In this study, thermal methods included experiments on the thermokinetics of modern deep-sea sediments of the Northeast Pacific Basin. For experimental the procedure, twelve samples of siliceous clayey silts collected from the Clarion−Clipperton Fracture Zone (CCFZ), Interoceanmetal claim area, were analysed. CCFZ is highly prospective as a giant marine polymetallic deposit which contains several economically valuable metals, such as Ni, Cu, or Co. Hydrocarbon potential, thermal maturity, and roasting products were investigated. Mineralogical characteristics of thermal products were investigated. The obtained results of thermal experiments were compared with sedimentological, mineralogical, and geochemical data of bulk sediments. The total enthalpy Δ<i>H<sub>Tot.</sub></i> and activation energy <i>E<sub>a</sub></i> were proposed as a new lithogeochemical proxies of oxygen depletion during oxic−suboxic diagenesis. The distinctive increase in positive enthalpy (or heat transmission) was observed with the burial depth, where pelagic sediments showed strong oxygen depletion and consumed more energy during phase transformations. |
| first_indexed | 2024-03-10T15:43:36Z |
| format | Article |
| id | doaj.art-93919403166948888399086c8b559f9a |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T15:43:36Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-93919403166948888399086c8b559f9a2023-11-20T16:38:34ZengMDPI AGMinerals2075-163X2020-10-01101090110.3390/min10100901Thermal Properties and Burial Alteration of Deep-Sea Sediments: New Indicators of Oxic−Suboxic DiagenesisŁukasz Maciąg0Dominik Zawadzki1Maciej J. Kotarba2Adam Piestrzyński3Ryszard A. Kotliński4Rafał Wróbel5Hieronim Zych6Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16, 70-383 Szczecin, PolandInstitute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16, 70-383 Szczecin, PolandFaculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, PolandFaculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, PolandInstitute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16, 70-383 Szczecin, PolandFaculty of Chemical Technology and Engineering, West Pomeranian University of Technology Szczecin, Pułaskiego 10, 70-322 Szczecin, PolandFaculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, PolandThe application of thermal methods, such as Rock−Eval 6 pyrolysis or differential thermal analysis, provides complex information about sediment and rock properties, including thermal behaviour, degree of maturity, alteration of organic matter, and high temperature combustion synthesis mineral products. In this study, thermal methods included experiments on the thermokinetics of modern deep-sea sediments of the Northeast Pacific Basin. For experimental the procedure, twelve samples of siliceous clayey silts collected from the Clarion−Clipperton Fracture Zone (CCFZ), Interoceanmetal claim area, were analysed. CCFZ is highly prospective as a giant marine polymetallic deposit which contains several economically valuable metals, such as Ni, Cu, or Co. Hydrocarbon potential, thermal maturity, and roasting products were investigated. Mineralogical characteristics of thermal products were investigated. The obtained results of thermal experiments were compared with sedimentological, mineralogical, and geochemical data of bulk sediments. The total enthalpy Δ<i>H<sub>Tot.</sub></i> and activation energy <i>E<sub>a</sub></i> were proposed as a new lithogeochemical proxies of oxygen depletion during oxic−suboxic diagenesis. The distinctive increase in positive enthalpy (or heat transmission) was observed with the burial depth, where pelagic sediments showed strong oxygen depletion and consumed more energy during phase transformations.https://www.mdpi.com/2075-163X/10/10/901pelagic sedimentsthermal analysishydrocarbonsRock−EvalClarion−Clippertondiagenesis |
| spellingShingle | Łukasz Maciąg Dominik Zawadzki Maciej J. Kotarba Adam Piestrzyński Ryszard A. Kotliński Rafał Wróbel Hieronim Zych Thermal Properties and Burial Alteration of Deep-Sea Sediments: New Indicators of Oxic−Suboxic Diagenesis Minerals pelagic sediments thermal analysis hydrocarbons Rock−Eval Clarion−Clipperton diagenesis |
| title | Thermal Properties and Burial Alteration of Deep-Sea Sediments: New Indicators of Oxic−Suboxic Diagenesis |
| title_full | Thermal Properties and Burial Alteration of Deep-Sea Sediments: New Indicators of Oxic−Suboxic Diagenesis |
| title_fullStr | Thermal Properties and Burial Alteration of Deep-Sea Sediments: New Indicators of Oxic−Suboxic Diagenesis |
| title_full_unstemmed | Thermal Properties and Burial Alteration of Deep-Sea Sediments: New Indicators of Oxic−Suboxic Diagenesis |
| title_short | Thermal Properties and Burial Alteration of Deep-Sea Sediments: New Indicators of Oxic−Suboxic Diagenesis |
| title_sort | thermal properties and burial alteration of deep sea sediments new indicators of oxic suboxic diagenesis |
| topic | pelagic sediments thermal analysis hydrocarbons Rock−Eval Clarion−Clipperton diagenesis |
| url | https://www.mdpi.com/2075-163X/10/10/901 |
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