Porosity distribution in a heterogeneous clay-rich fault core by image processing of 14C-PMMA autoradiographs and Scanning Electron Microscopy

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dc.contributor.author Nenonen, Ville Valtteri
dc.contributor.author Sammaljärvi, Juuso
dc.contributor.author Johanson, Bo
dc.contributor.author Voutilainen, Mikko
dc.contributor.author L'Hôpital, Emilie
dc.contributor.author Dick, Pierre
dc.contributor.author Siitari-Kauppi, Marja
dc.date.accessioned 2018-12-10T09:04:01Z
dc.date.available 2018-12-10T09:04:01Z
dc.date.issued 2018
dc.identifier.citation Nenonen , V V , Sammaljärvi , J , Johanson , B , Voutilainen , M , L'Hôpital , E , Dick , P & Siitari-Kauppi , M 2018 , ' Porosity distribution in a heterogeneous clay-rich fault core by image processing of 14C-PMMA autoradiographs and Scanning Electron Microscopy ' , MRS Advances , vol. 3 , no. 21 , pp. 1167-1173 . https://doi.org/10.1557/adv.2017.615
dc.identifier.other PURE: 99363363
dc.identifier.other PURE UUID: 69b2f210-43df-46d7-9f71-e67d4ba6d347
dc.identifier.other Scopus: 85046250770
dc.identifier.other ORCID: /0000-0002-7329-4252/work/46649369
dc.identifier.other ORCID: /0000-0002-5534-149X/work/46651210
dc.identifier.other WOS: 000431032400006
dc.identifier.uri http://hdl.handle.net/10138/272984
dc.description.abstract Shale formations are considered by a number of countries as the most suitable media to dispose of high-level radioactive waste. This is mainly due to the impermeable, self-sealing, chemical reducing, and sorption properties that tend to retard radionuclide migration. However, shale formations can also contain highly connected fault zones with permeabilities that can differ of several orders of magnitudes with respect to the undeformed host rock. The objective of this work is to use the 14C-PMMA autoradiography method combined with SEM-EDS measurements to understand the porosity variations in and around fault gouges and to define their relationship to mechano-chemical processes. The studied samples were taken from a low permeability shale in a small-scale vertical strike-slip fault at the Tournemire underground research laboratory. Results display significant variations in porosity and mineralogy along the studied gouge zone due to polyphased tectonics and paleo-fluid circulations. fi
dc.description.abstract Shale formations are considered by a number of countries as the most suitable media to dispose of high-level radioactive waste. This is mainly due to the impermeable, self-sealing, chemical reducing, and sorption properties that tend to retard radionuclide migration. However, shale formations can also contain highly connected fault zones with permeabilities that can differ of several orders of magnitudes with respect to the undeformed host rock. The objective of this work is to use the 14C-PMMA autoradiography method combined with SEM-EDS measurements to understand the porosity variations in and around fault gouges and to define their relationship to mechano-chemical processes. The studied samples were taken from a low permeability shale in a small-scale vertical strike-slip fault at the Tournemire underground research laboratory. Results display significant variations in porosity and mineralogy along the studied gouge zone due to polyphased tectonics and paleo-fluid circulations. en
dc.format.extent 7
dc.language.iso eng
dc.relation.ispartof MRS Advances
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 116 Chemical sciences
dc.subject 1171 Geosciences
dc.title Porosity distribution in a heterogeneous clay-rich fault core by image processing of 14C-PMMA autoradiographs and Scanning Electron Microscopy en
dc.type Conference article
dc.contributor.organization Department
dc.contributor.organization Department of Chemistry
dc.contributor.organization Geological disposal of spent nuclear fuel
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1557/adv.2017.615
dc.relation.issn 2059-8521
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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