Fluid-deposited graphite and its geobiological implications in early Archean gneiss from Akilia, Greenland
International audience Graphite, interpreted as altered bioorganic matter in an early Archean, ca. 3.83-Ga-old quartz-amphibole-pyroxene gneiss on Akilia Island, Greenland, has previously been claimed to be the earliest trace of life on Earth. Our petrographic and Raman spectroscopy data from this g...
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ftccsdartic:oai:HAL:hal-03886252v1 2023-10-09T21:51:56+02:00 Fluid-deposited graphite and its geobiological implications in early Archean gneiss from Akilia, Greenland Lepland, A. van Zuilen, M. Philippot, Pascal Geological Survey of Norway (NGU) Tallinn University of Technology (TTÜ) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) University of Bergen (UiB) 2011-01 https://hal.science/hal-03886252 https://doi.org/10.1111/j.1472-4669.2010.00261.x en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1472-4669.2010.00261.x info:eu-repo/semantics/altIdentifier/pmid/21070588 hal-03886252 https://hal.science/hal-03886252 doi:10.1111/j.1472-4669.2010.00261.x PUBMED: 21070588 ISSN: 1472-4677 EISSN: 1472-4669 Geobiology https://hal.science/hal-03886252 Geobiology, 2011, 9 (1), pp.2-9. ⟨10.1111/j.1472-4669.2010.00261.x⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2011 ftccsdartic https://doi.org/10.1111/j.1472-4669.2010.00261.x 2023-09-23T23:27:43Z International audience Graphite, interpreted as altered bioorganic matter in an early Archean, ca. 3.83-Ga-old quartz-amphibole-pyroxene gneiss on Akilia Island, Greenland, has previously been claimed to be the earliest trace of life on Earth. Our petrographic and Raman spectroscopy data from this gneiss reveal the occurrence of graphitic material with the structure of nano-crystalline to crystalline graphite in trails and clusters of CO₂, CH₄ and H₂O bearing fluid inclusions. Irregular particles of graphitic material without a fluid phase, representing decrepitated fluid inclusions are common in such trails too, but occur also as dispersed individual or clustered particles. The occurrence of graphitic material associated with carbonic fluid inclusions is consistent with an abiologic, fluid deposited origin during a poly-metamorphic history. The evidence for fluid-deposited graphitic material greatly complicates any claim about remnants of early life in the Akilia rock. Article in Journal/Newspaper Greenland Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Greenland Geobiology 9 1 2 9 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Lepland, A. van Zuilen, M. Philippot, Pascal Fluid-deposited graphite and its geobiological implications in early Archean gneiss from Akilia, Greenland |
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[SDE]Environmental Sciences |
description |
International audience Graphite, interpreted as altered bioorganic matter in an early Archean, ca. 3.83-Ga-old quartz-amphibole-pyroxene gneiss on Akilia Island, Greenland, has previously been claimed to be the earliest trace of life on Earth. Our petrographic and Raman spectroscopy data from this gneiss reveal the occurrence of graphitic material with the structure of nano-crystalline to crystalline graphite in trails and clusters of CO₂, CH₄ and H₂O bearing fluid inclusions. Irregular particles of graphitic material without a fluid phase, representing decrepitated fluid inclusions are common in such trails too, but occur also as dispersed individual or clustered particles. The occurrence of graphitic material associated with carbonic fluid inclusions is consistent with an abiologic, fluid deposited origin during a poly-metamorphic history. The evidence for fluid-deposited graphitic material greatly complicates any claim about remnants of early life in the Akilia rock. |
author2 |
Geological Survey of Norway (NGU) Tallinn University of Technology (TTÜ) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) University of Bergen (UiB) |
format |
Article in Journal/Newspaper |
author |
Lepland, A. van Zuilen, M. Philippot, Pascal |
author_facet |
Lepland, A. van Zuilen, M. Philippot, Pascal |
author_sort |
Lepland, A. |
title |
Fluid-deposited graphite and its geobiological implications in early Archean gneiss from Akilia, Greenland |
title_short |
Fluid-deposited graphite and its geobiological implications in early Archean gneiss from Akilia, Greenland |
title_full |
Fluid-deposited graphite and its geobiological implications in early Archean gneiss from Akilia, Greenland |
title_fullStr |
Fluid-deposited graphite and its geobiological implications in early Archean gneiss from Akilia, Greenland |
title_full_unstemmed |
Fluid-deposited graphite and its geobiological implications in early Archean gneiss from Akilia, Greenland |
title_sort |
fluid-deposited graphite and its geobiological implications in early archean gneiss from akilia, greenland |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-03886252 https://doi.org/10.1111/j.1472-4669.2010.00261.x |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
ISSN: 1472-4677 EISSN: 1472-4669 Geobiology https://hal.science/hal-03886252 Geobiology, 2011, 9 (1), pp.2-9. ⟨10.1111/j.1472-4669.2010.00261.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1472-4669.2010.00261.x info:eu-repo/semantics/altIdentifier/pmid/21070588 hal-03886252 https://hal.science/hal-03886252 doi:10.1111/j.1472-4669.2010.00261.x PUBMED: 21070588 |
op_doi |
https://doi.org/10.1111/j.1472-4669.2010.00261.x |
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Geobiology |
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9 |
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9 |
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1779315068088877056 |