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Global hydrogen reservoirs in basement and basins
BACKGROUND: Hydrogen is known to occur in the groundwaters of some ancient cratons. Where associated gases have been dated, their age extends up to a billion years, and the hydrogen is assumed also to be very old. These observations are interpreted to represent the radiolysis of water and hydration...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5359194/ https://www.ncbi.nlm.nih.gov/pubmed/29086804 http://dx.doi.org/10.1186/s12932-017-0041-4 |
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author | Parnell, John Blamey, Nigel |
author_facet | Parnell, John Blamey, Nigel |
author_sort | Parnell, John |
collection | PubMed |
description | BACKGROUND: Hydrogen is known to occur in the groundwaters of some ancient cratons. Where associated gases have been dated, their age extends up to a billion years, and the hydrogen is assumed also to be very old. These observations are interpreted to represent the radiolysis of water and hydration reactions and migration of hydrogen into fracture systems. A hitherto untested implication is that the overwhelming bulk of the ancient low-permeability basement, which is not adjacent to cross-cutting fractures, constitutes a reservoir for hydrogen. RESULTS: New data obtained from cold crushing to liberate volatiles from fluid inclusions confirm that granites and gneiss of Archean and Palaeoproterozoic (>1600 Ma) age typically contain an order of magnitude greater hydrogen in their entrained fluid than very young (<200 Ma) granites. Sedimentary rocks containing clasts of old basement also include a greater proportion of hydrogen than the young granites. CONCLUSIONS: The data support the case for a global reservoir of hydrogen in both the ancient basement and in the extensive derived sediments. These reservoirs are susceptible to the release of hydrogen through a variety of mechanisms, including deformation, attrition to reduce grain size and diagenetic alteration, thereby contributing to the hydrogen required by chemolithoautotrophs in the deep biosphere. |
format | Online Article Text |
id | pubmed-5359194 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-53591942017-03-31 Global hydrogen reservoirs in basement and basins Parnell, John Blamey, Nigel Geochem Trans Research Article BACKGROUND: Hydrogen is known to occur in the groundwaters of some ancient cratons. Where associated gases have been dated, their age extends up to a billion years, and the hydrogen is assumed also to be very old. These observations are interpreted to represent the radiolysis of water and hydration reactions and migration of hydrogen into fracture systems. A hitherto untested implication is that the overwhelming bulk of the ancient low-permeability basement, which is not adjacent to cross-cutting fractures, constitutes a reservoir for hydrogen. RESULTS: New data obtained from cold crushing to liberate volatiles from fluid inclusions confirm that granites and gneiss of Archean and Palaeoproterozoic (>1600 Ma) age typically contain an order of magnitude greater hydrogen in their entrained fluid than very young (<200 Ma) granites. Sedimentary rocks containing clasts of old basement also include a greater proportion of hydrogen than the young granites. CONCLUSIONS: The data support the case for a global reservoir of hydrogen in both the ancient basement and in the extensive derived sediments. These reservoirs are susceptible to the release of hydrogen through a variety of mechanisms, including deformation, attrition to reduce grain size and diagenetic alteration, thereby contributing to the hydrogen required by chemolithoautotrophs in the deep biosphere. Springer International Publishing 2017-03-20 /pmc/articles/PMC5359194/ /pubmed/29086804 http://dx.doi.org/10.1186/s12932-017-0041-4 Text en © The Author(s) 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Article Parnell, John Blamey, Nigel Global hydrogen reservoirs in basement and basins |
title | Global hydrogen reservoirs in basement and basins |
title_full | Global hydrogen reservoirs in basement and basins |
title_fullStr | Global hydrogen reservoirs in basement and basins |
title_full_unstemmed | Global hydrogen reservoirs in basement and basins |
title_short | Global hydrogen reservoirs in basement and basins |
title_sort | global hydrogen reservoirs in basement and basins |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5359194/ https://www.ncbi.nlm.nih.gov/pubmed/29086804 http://dx.doi.org/10.1186/s12932-017-0041-4 |
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