{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361137044508603776.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2010gc003381"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2010GC003381"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2010GC003381"}}],"dc:title":[{"@value":"Interpretation of porosity and LWD resistivity from the Nankai accretionary wedge in light of clay physicochemical properties: Evidence for erosion and local overpressuring"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>In this study, we used porosity to assess the compaction state of the Nankai accretionary wedge sediments and any implications for stress and pore pressure. However, hydrous minerals affect porosity measurements, and accounting for them is essential toward defining the interstitial porosity truly representative of the compaction state. The water content of sediments was measured in core samples and estimated from logging data using a resistivity model for shale. We used the cation exchange capacity to correct the porosity data for the amount of water bound to clay minerals and to correct the porosity estimates for the surface conductivity of hydrous minerals. The results indicate that several apparent porosity anomalies are significantly reduced by this correction, implying that they are in part artifacts from hydrous minerals. The correction also improves the fit of porosity estimated from logging‐while‐drilling (LWD) resistivity data to porosity measured on cores. Low overall porosities at the toe of the accretionary wedge and in the splay fault area are best explained by erosion, and we estimated the quantity of sediments eroded within the splay fault area by comparing porosity‐effective stress relationships of the sediments to a reference curve. Additionally, a comparison of LWD data with core data (resistivity and <jats:italic>P</jats:italic> wave velocity) obtained at Site C0001 landward of the mega‐splay fault area, suggested a contribution from the fracture porosity to in situ properties on the formation.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004233535560837","@type":"Researcher","foaf:name":[{"@value":"M. Conin"}],"jpcoar:affiliationName":[{"@value":"Université Aix‐Marseille III CEREGE, CRPG  Bat. Trocadero, Europole de l'Arbois, F‐13545 Aix en Provence France"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044508603650","@type":"Researcher","foaf:name":[{"@value":"P. Henry"}],"jpcoar:affiliationName":[{"@value":"CEREGE, CNRS  Europole de l'Arbois, BP 80 F‐13545 Aix en Provence CEDEX 04 France"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044508603649","@type":"Researcher","foaf:name":[{"@value":"S. Bourlange"}],"jpcoar:affiliationName":[{"@value":"CRPG, CNRS  15 rue Notre Dame des Pauvres, F‐54501 Vandoeuvre‐lès‐Nancy France"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044508603651","@type":"Researcher","foaf:name":[{"@value":"H. Raimbourg"}],"jpcoar:affiliationName":[{"@value":"Orleans University, CNRS  Château de La Source, Avenue du Parc Floral, BP 6749 F‐45067 Orléans CEDEX 2 France"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044508603648","@type":"Researcher","foaf:name":[{"@value":"T. Reuschlé"}],"jpcoar:affiliationName":[{"@value":"Institut de Physique du Globe de Strasbourg CNRS  5 rue Rene Descartes, F‐67084 Strasbourg France"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"15252027"},{"@type":"EISSN","@value":"15252027"}],"prism:publicationName":[{"@value":"Geochemistry, Geophysics, Geosystems"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2011-03","prism:volume":"12","prism:number":"3","prism:startingPage":"Q0AD07"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2010GC003381"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2010GC003381"}],"createdAt":"2011-03-04","modifiedAt":"2023-09-25","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050845760765733504","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Near-trench slip potential of megaquakes evaluated from fault properties and conditions."}]},{"@id":"https://cir.nii.ac.jp/crid/1050845760779256704","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Distribution of stress state in the Nankai subduction zone, southwest Japan and a comparison with Japan Trench"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004233286547968","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Acoustic and mechanical properties of Nankai accretionary prism core samples"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285708266508928","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Mechanical and hydraulic properties of Nankai accretionary prism sediments: Effect of stress path"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565168117704448","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Gas hydrate saturation at <scp>S</scp>ite <scp>C</scp>0002, <scp>IODP E</scp>xpeditions 314 and 315, in the <scp>K</scp>umano <scp>B</scp>asin, <scp>N</scp>ankai trough"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567183240025472","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Slumping and mass transport deposition in the Nankai fore arc: Evidence from IODP drilling and 3‐D reflection seismic data"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848654731818624","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Consolidation state of incoming sediments to the Nankai Trough subduction zone: Implications for sediment deformation and properties"}]},{"@id":"https://cir.nii.ac.jp/crid/2050025942140841216","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Simultaneous estimation of in situ porosity and thermal structure from core sample measurements and resistivity log data at Nankai accretionary prism"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2010gc003381"},{"@type":"CROSSREF","@value":"10.1029/2010gc003169_references_DOI_Nl9sK9oo3letC874XsM45lFXVpF"},{"@type":"CROSSREF","@value":"10.1038/srep28184_references_DOI_Nl9sK9oo3letC874XsM45lFXVpF"},{"@type":"CROSSREF","@value":"10.1029/2012gc004124_references_DOI_Nl9sK9oo3letC874XsM45lFXVpF"},{"@type":"CROSSREF","@value":"10.1016/j.tecto.2015.05.008_references_DOI_Nl9sK9oo3letC874XsM45lFXVpF"},{"@type":"CROSSREF","@value":"10.1111/iar.12064_references_DOI_Nl9sK9oo3letC874XsM45lFXVpF"},{"@type":"CROSSREF","@value":"10.1029/2010gc003431_references_DOI_Nl9sK9oo3letC874XsM45lFXVpF"},{"@type":"CROSSREF","@value":"10.1002/2014gc005360_references_DOI_Nl9sK9oo3letC874XsM45lFXVpF"},{"@type":"CROSSREF","@value":"10.1186/s40623-019-1097-4_references_DOI_P1lwpCe866qj7mgnam2JmxvBia2"}]}