000169110 001__ 169110
000169110 005__ 20260219161517.0
000169110 0247_ $$2doi$$a10.1016/j.pepi.2018.06.003
000169110 0248_ $$2sideral$$a107054
000169110 037__ $$aART-2018-107054
000169110 041__ $$aeng
000169110 100__ $$0(orcid)0000-0002-4485-2139$$aCalvín, P.
000169110 245__ $$aThe carriers of AMS in remagnetized carbonates. Insights for remagnetization mechanism and basin evolution
000169110 260__ $$c2018
000169110 5203_ $$aMagnetic fabrics are usually studied to unravel the evolution of sedimentary basins, mainly focusing the attention in paramagnetic minerals. However, since basins are sometimes affected by burial-related chemical remagnetizations, magnetic fabrics can also be carried by authigenic ferromagnetic minerals related to remagnetization processes. Consequently, the study of the different types of fabrics can give complementary and valuable information about the evolution of sedimentary basins. Here, we explore, in the Jurassic carbonates of the Central High Atlas (Morocco), the role in magnetic fabrics of authigenic magnetite that grew during the Cretaceous (ca. 100 Ma) widespread remagnetization event. Magnetic fabrics are studied in 53 sites using the anisotropy of the magnetic susceptibility measured at room temperature (RT-AMS) and comparing results with sub-fabrics that alternatively enhance the paramagnetic and the ferromagnetic signal. Furthermore, an innovative analysis is proposed, comparing the magnetic fabrics before and after bedding correction (the common procedure) with fabric orientation after partial bedding correction. We use the paleomagnetic information to reconstruct the attitude of bedding at the remagnetization time and to restore the magnetic fabrics at this time. The performed analysis allows interpreting RT-AMS in terms of the contribution of different subfabrics, and the relationship between these, tectonic processes and the magnetic mineralogy. Four RT-AMS types are defined: T1 is carried by superparamagnetic magnetite that grew during the remagnetization stage and shows a horizontal lineation parallel to the extension direction at this time; T3 and T4 are carried by paramagnetic minerals and show compressive fabrics with the magnetic lineation parallel to intersection (bedding-cleavage) lineation; finally, T2 shows a mix between ferrimagnetic and paramagnetic fabrics.
000169110 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/BES-2013-062988$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2016-77560
000169110 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000169110 590__ $$a2.615$$b2018
000169110 591__ $$aGEOCHEMISTRY & GEOPHYSICS$$b36 / 84 = 0.429$$c2018$$dQ2$$eT2
000169110 592__ $$a1.16$$b2018
000169110 593__ $$aAstronomy and Astrophysics$$c2018$$dQ1
000169110 593__ $$aSpace and Planetary Science$$c2018$$dQ1
000169110 593__ $$aPhysics and Astronomy (miscellaneous)$$c2018$$dQ1
000169110 593__ $$aGeophysics$$c2018$$dQ1
000169110 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000169110 700__ $$aVillalaín, J.J.
000169110 700__ $$0(orcid)0000-0003-3652-3527$$aCasas-Sainz, A.M.$$uUniversidad de Zaragoza
000169110 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000169110 773__ $$g282 (2018), 1-20$$pPhys. earth planet. inter.$$tPHYSICS OF THE EARTH AND PLANETARY INTERIORS$$x0031-9201
000169110 8564_ $$s6834659$$uhttps://zaguan.unizar.es/record/169110/files/texto_completo.pdf$$yVersión publicada
000169110 8564_ $$s2521008$$uhttps://zaguan.unizar.es/record/169110/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000169110 909CO $$ooai:zaguan.unizar.es:169110$$particulos$$pdriver
000169110 951__ $$a2026-02-19-14:10:44
000169110 980__ $$aARTICLE