Enrichment mechanism of trace elements in pyrite under methane seepage Article Swipe
Xiaoming Miao
,
Xiuli Feng
,
Jueyao Li
,
Xiting Liu
,
Jike Liang
,
J. Feng
,
Qiang Xiao
,
Xiaopeng Dan
,
Jiangong Wei
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.7185/geochemlet.2211
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.7185/geochemlet.2211
Authigenic pyrite is an important recorder for methane seepage.During methane seepage, the sulfur and iron isotopic composition of pyrite will change, allowing it to be used as an indicator to identify methane seepage.However, the dissimilar behaviour of trace elements in authigenic pyrite during methane seepage remain unclear.To provide insights, we used pyrite samples from the 'Haima' seep locality to determine differences in trace element contents in pyrite obtained from the sulfatemethane transition zone (SMTZ) and that from normal (non-seepage) sedimentary environments.In the SMTZ, the content of cadmium (Cd) related to the organoclastic sulfate reduction in pyrite was low, while the molybdenum (Mo) content, which is highly sensitive to redox environments, was high.This discrepancy can be explained by the fact that sulfate ions (SO 4 2-) in the SMTZ were preferentially consumed by sulfate driven anaerobic oxidation of methane (SD-AOM), which inhibited organoclastic sulfate reduction and decreased the trace metals derived from organic matter in pore water.Simultaneously, intense SD-AOM produced more hydrogen sulfide (H 2 S), which was more conducive to Mo removal from pore water, and then more Mo adsorption onto pyrite.Further analysis shows that the Mo/Cd ratio of pyrite in the SMTZ (average value of 82.08) is significantly higher than that of the non-SMTZ (average value of 16.02).We believe that the Mo/Cd ratio has great potential to indicate methane seepage, and thus provides a new indicator for methane seepage research.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.7185/geochemlet.2211
- https://www.geochemicalperspectivesletters.org/documents/GPL2211_noSI.pdf
- OA Status
- diamond
- Cited By
- 23
- References
- 26
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4220808755
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4220808755Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.7185/geochemlet.2211Digital Object Identifier
- Title
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Enrichment mechanism of trace elements in pyrite under methane seepageWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-04-01Full publication date if available
- Authors
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Xiaoming Miao, Xiuli Feng, Jueyao Li, Xiting Liu, Jike Liang, J. Feng, Qiang Xiao, Xiaopeng Dan, Jiangong WeiList of authors in order
- Landing page
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https://doi.org/10.7185/geochemlet.2211Publisher landing page
- PDF URL
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https://www.geochemicalperspectivesletters.org/documents/GPL2211_noSI.pdfDirect link to full text PDF
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YesWhether a free full text is available
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diamondOpen access status per OpenAlex
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https://www.geochemicalperspectivesletters.org/documents/GPL2211_noSI.pdfDirect OA link when available
- Concepts
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Pyrite, TRACE (psycholinguistics), Methane, Mechanism (biology), Environmental chemistry, Environmental science, Mining engineering, Geochemistry, Geology, Chemistry, Philosophy, Organic chemistry, Epistemology, LinguisticsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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23Total citation count in OpenAlex
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2025: 8, 2024: 5, 2023: 4, 2022: 6Per-year citation counts (last 5 years)
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26Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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