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Unveiling microbial...
Unveiling microbial preservation under hyperacidic and oxidizing conditions in the Oligocene Rio Tinto deposit
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- Fernández-Remolar, David C. (författare)
- Macau University of Science and Technology,Université Grenoble Alpes,Grenoble Alpes University
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- Carrizo, Daniel (författare)
- Centro de Astrobiologia (CAB)
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- Harir, Mourad (författare)
- Helmholtz Zentrum,Helmholtz Center
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- Huang, Ting (författare)
- Macau University of Science and Technology
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- Amils, R. I. (författare)
- Universidad Autonoma de Madrid (UAM),Centro de Astrobiologia (CAB)
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- Schmitt-Kopplin, Philippe (författare)
- Helmholtz Zentrum,Helmholtz Center,Technische Universität München (TUM),Technical University of Munich (TUM)
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- Sánchez-García, Laura (författare)
- Centro de Astrobiologia (CAB)
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- Gómez-Ortiz, David (författare)
- Universidad Rey Juan Carlos,Rey Juan Carlos University
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- Malmberg, Per, 1974 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2021-11-02
- 2021
- Engelska.
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Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322 .- 2045-2322. ; 11:1
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://www.nature.c...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The preservation of biosignatures on Mars is largely associated with extensive deposits of clays formed under mild early Noachian conditions (> 3.9 Ga). They were followed by widespread precipitation of acidic sulfates considered adverse for biomolecule preservation. In this paper, an exhaustive mass spectrometry investigation of ferric subsurface materials in the Rio Tinto gossan deposit (~ 25 Ma) provides evidence of well-preserved molecular biosignatures under oxidative and acidic conditions. Time of flight secondary ion mass spectrometry (ToF–SIMS) analysis shows a direct association between physical-templating biological structures and molecular biosignatures. This relation implies that the quality of molecular preservation is exceptional and provides information on microbial life formerly operating in the shallow regions of the Rio Tinto subsurface. Consequently, low-pH oxidative environments on Mars could also record molecular information about ancient life in the same way as the Noachian clay-rich deposits.
Ämnesord
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Annan geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Other Earth and Related Environmental Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Textil-, gummi- och polymermaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Textile, Rubber and Polymeric Materials (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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