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dc.contributor.authorCalvín Ballester, Pablo 
dc.contributor.authorVillalaín Santamaria, Juan José 
dc.contributor.authorCasas Sainz, Antonio M. .
dc.date.accessioned2018-07-06T10:26:09Z
dc.date.issued2018-09
dc.identifier.issn0031-9201
dc.identifier.urihttp://hdl.handle.net/10259/4837
dc.description.abstractMagnetic fabrics are usually studied to unravel the evolution of sedimentary basins, mainly focusing the attention in paramagnetic minerals. However, since basins are sometimes affected by burial-related chemical remagnetizations, magnetic fabrics can also be carried by authigenic ferromagnetic minerals related to remagnetization processes. Consequently, the study of the different types of fabrics can give complementary and valuable information about the evolution of sedimentary basins. Here, we explore, in the Jurassic carbonates of the Central High Atlas (Morocco), the role in magnetic fabrics of authigenic magnetite that grew during the Cretaceous (ca. 100 Ma) widespread remagnetization event. Magnetic fabrics are studied in 53 sites using the anisotropy of the magnetic susceptibility measured at room temperature (RT-AMS) and comparing results with sub-fabrics that alternatively enhance the paramagnetic and the ferromagnetic signal. Furthermore, an innovative analysis is proposed, comparing the magnetic fabrics before and after bedding correction (the common procedure) with fabric orientation after partial bedding correction. We use the paleomagnetic information to reconstruct the attitude of bedding at the remagnetization time and to restore the magnetic fabrics at this time. The performed analysis allows interpreting RT-AMS in terms of the contribution of different subfabrics, and the relationship between these, tectonic processes and the magnetic mineralogy. Four RT-AMS types are defined: T1 is carried by superparamagnetic magnetite that grew during the remagnetization stage and shows a horizontal lineation parallel to the extension direction at this time; T3 and T4 are carried by paramagnetic minerals and show compressive fabrics with the magnetic lineation parallel to intersection (bedding-cleavage) lineation; finally, T2 shows a mix between ferrimagnetic and paramagnetic fabrics.en
dc.description.sponsorshipMINECO (Spanish Ministry of Economy and Competitiveness) cofinanced by the ERDF (European Union) (research projects CGL2012-38481 and CGL2016-77560).en
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherElsevieren
dc.relation.ispartofPhysics of the Earth and Planetary Interiors. 2018, V. 282, p. 1-20en
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectMagnetic fabricsen
dc.subjectMagnetic subfabricsen
dc.subjectSuperparamagnetic fabricen
dc.subjectLimestone fabricen
dc.subjectRemagnetizationen
dc.subjectCentral High Atlasen
dc.subject.otherMagnetismoes
dc.subject.otherMagnetismen
dc.subject.otherFísicaes
dc.subject.otherPhysicsen
dc.titleThe carriers of AMS in remagnetized carbonates. Insights for remagnetization mechanism and basin evolutionen
dc.typeArtículoes
dc.typeinfo:eu-repo/semantics/article
dc.date.embargo2020-09
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.relation.publisherversionhttps://doi.org/10.1016/j.pepi.2018.06.003
dc.identifier.doi10.1016/j.pepi.2018.06.003
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CGL2012-38481
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CGL2016-77560
dc.type.hasVersioninfo:eu-repo/semantics/acceptedVersionen


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