000168436 001__ 168436
000168436 005__ 20260205155159.0
000168436 0247_ $$2doi$$a10.1017/S0016756825100514
000168436 0248_ $$2sideral$$a147907
000168436 037__ $$aART-2026-147907
000168436 041__ $$aeng
000168436 100__ $$aSimón-Muzás, Ana
000168436 245__ $$aInterplay of caldera and tectonic subsidence in an inverted Late Carboniferous–Permian basin (Central Pyrenees)
000168436 260__ $$c2026
000168436 5060_ $$aAccess copy available to the general public$$fUnrestricted
000168436 5203_ $$aDeposits of thick volcanic and volcaniclastic series can be interpreted as either related to regional tectonics (commonly extensional or transtensional tectonics) or local volcanic mechanisms (caldera collapse). In order to distinguish between these two end-member mechanisms, we propose the use of magnetic techniques, namely analysis of Anisotropy of Magnetic Susceptibility (AMS) and paleomagnetism, and analysis of geological structures. These techniques have been applied to the Estac Basin (Central Pyrenees), an inverted Late Carboniferous–Permian basin now involved in the antiformal stack of the Pyrenean belt. AMS data provide directions of flow of volcanic rocks that can be interpreted in terms of palaeo-slopes and therefore can be related to structures contemporary with deposition and Late Carboniferous–Permian volcanic activity. The maximum of the magnetic lineation (i.e. volcanic paleoflow) direction is bimodal, with (i) an absolute maximum (as occurring in most South-Pyrenean Late Carboniferous–Permian basins) along a WNW–ESE direction and (ii) a secondary magnetic lineation along an N–S direction. Paleomagnetic data obtained from the volcanic products show a primary magnetization or early remagnetization compatible with the Late Carboniferous–Permian paleomagnetic reference direction and allow us to reconstruct an early folding probably related to the warping of the basin. The magnetic and structural data can be interpreted according to a volcano-tectonic subsidence model in which E–W faults played a major role and caldera collapse contributed to the important thickness of the volcaniclastic deposits.
000168436 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/FPU19-02353$$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-108753GB-C22$$9info:eu-repo/grantAgreement/ES/MICINN/PID2020-114273GB-C22
000168436 540__ $$9info:eu-repo/semantics/openAccess$$aby-sa$$uhttps://creativecommons.org/licenses/by-sa/4.0/deed.es
000168436 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000168436 700__ $$aSoto, Ruth
000168436 700__ $$aGarcía-Lasanta, Cristina
000168436 700__ $$aHousen, Bernard
000168436 700__ $$0(orcid)0000-0002-3276-5871$$aGisbert, Josep$$uUniversidad de Zaragoza
000168436 700__ $$0(orcid)0000-0003-3652-3527$$aCasas-Sainz, Antonio$$uUniversidad de Zaragoza
000168436 7102_ $$12000$$2685$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Petrología y Geoquímica
000168436 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000168436 773__ $$g163 (2026), [24 pp.]$$pGeol. mag.$$tGEOLOGICAL MAGAZINE$$x0016-7568
000168436 8564_ $$s10898953$$uhttps://zaguan.unizar.es/record/168436/files/texto_completo.pdf$$yVersión publicada
000168436 8564_ $$s3363872$$uhttps://zaguan.unizar.es/record/168436/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000168436 909CO $$ooai:zaguan.unizar.es:168436$$particulos$$pdriver
000168436 951__ $$a2026-02-05-14:36:33
000168436 980__ $$aARTICLE