000169113 001__ 169113
000169113 005__ 20260220145912.0
000169113 0247_ $$2doi$$a10.1130/G45158.1
000169113 0248_ $$2sideral$$a107983
000169113 037__ $$aART-2018-107983
000169113 041__ $$aeng
000169113 100__ $$0(orcid)0000-0002-4485-2139$$aCalvin, P.
000169113 245__ $$aAnisotropic magnetite growth in remagnetized limestones: Tectonic constraints and implications for basin history
000169113 260__ $$c2018
000169113 5203_ $$aMagnetic properties of sedimentary rocks have been commonly exploited to determine the tectonic and chemical evolution of sedimentary basins. We here propose the use of the anisotropy of the anhysteretic remanent magnetization (ARM) to infer the orientation of magnetite grains formed during remagnetization stages, and hence to obtain the tectonic regime during the magnetization period, whose age can also be constrained by paleomagnetic methods. The anisotropy of ARM technique is here applied to remagnetized Jurassic limestones from the Central High Atlas (North Africa). These rocks were remagnetized at ca. 100 Ma during the Cretaceous Normal Superchron in an extensional tectonic setting. The magnetic fabric carried by authigenic magnetite (which is also the carrier of the remagnetization) shows a consistent orientation after a partial bedding correction, which precisely corresponds with the attitude of strata at the time of remagnetization. The anisotropy of the ARM tensor shows a well-defined horizontal lineation parallel to the Mesozoic regional extension, and a horizontal magnetic foliation perpendicular to the lithostatic maximum stress axis. Therefore, our results demonstrate that (1) the magnetite grain growth was consistent with the stress conditions and did not follow any preexisting fabric of the rock, and (2) these grains did not rotate during the subsequent compressional events.
000169113 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/BES-2013-062988$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2012-38481$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2016-77560
000169113 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000169113 590__ $$a5.006$$b2018
000169113 591__ $$aGEOLOGY$$b1 / 46 = 0.022$$c2018$$dQ1$$eT1
000169113 592__ $$a2.868$$b2018
000169113 593__ $$aGeology$$c2018$$dQ1
000169113 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000169113 700__ $$aVillalain, J.J.
000169113 700__ $$0(orcid)0000-0003-3652-3527$$aCasas-Sainz, A.M.$$uUniversidad de Zaragoza
000169113 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000169113 773__ $$g46, 9 (2018), 751-754$$pGeology$$tGeology$$x0091-7613
000169113 8564_ $$s433172$$uhttps://zaguan.unizar.es/record/169113/files/texto_completo.pdf$$yVersión publicada
000169113 8564_ $$s3520410$$uhttps://zaguan.unizar.es/record/169113/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000169113 909CO $$ooai:zaguan.unizar.es:169113$$particulos$$pdriver
000169113 951__ $$a2026-02-20-14:58:08
000169113 980__ $$aARTICLE