000126312 001__ 126312
000126312 005__ 20241125101153.0
000126312 0247_ $$2doi$$a10.1007/s41513-023-00206-w
000126312 0248_ $$2sideral$$a133631
000126312 037__ $$aART-2023-133631
000126312 041__ $$aeng
000126312 100__ $$aMajarena, U.
000126312 245__ $$aEl magmatismo de Atienza (NW de la Cordillera Ibérica): edad, origen y arquitectura del sistema magmático
000126312 260__ $$c2023
000126312 5060_ $$aAccess copy available to the general public$$fUnrestricted
000126312 5203_ $$aA sill covering an area of more than 15 km2, several dykes up to 5 m thick and a volcanoclastic deposit crop out with similar petrology in the sector of Atienza (NW Iberian Chain, Spain). They consist of calc-alkaline porphyritic andesites with phenocrysts of plagioclase, amphibole, biotite, garnet and orthopyroxene. Based on U–Pb zircon analysis, an age of 290 ± 3 Ma (Sakmarian-Artinskian in the Cisuralian) has been calculated for this magmatism. The chemistry and geothermobarometry on amphibole crystals revealed crystallisation at different depths between 31 and 16 km, involving several events of magma recharge and fractional crystallisation. Magma ascent led to destabilisation of the amphibole crystals, their replacement by biotite, and the formation of thick microcrystalline coronas. Whole-rock trace element and isotopic compositions support a strong crustal influence in the origin of the magma. Crustal melting was produced by heating generated after lithospheric thinning, delamination, and asthenospheric rise produced after the uplift of the Variscan Orogen and the oroclinal folding of the Iberian Massif.
000126312 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E32-17R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-108753GB-C22
000126312 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000126312 590__ $$a1.3$$b2023
000126312 592__ $$a0.448$$b2023
000126312 591__ $$aGEOLOGY$$b22 / 61 = 0.361$$c2023$$dQ2$$eT2
000126312 593__ $$aStratigraphy$$c2023$$dQ2
000126312 593__ $$aGeology$$c2023$$dQ2
000126312 594__ $$a2.6$$b2023
000126312 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000126312 700__ $$0(orcid)0000-0002-2745-0357$$aGalé, C.
000126312 700__ $$aEsteban, J. J.
000126312 700__ $$0(orcid)0000-0002-3609-7380$$aLago, M.
000126312 700__ $$0(orcid)0000-0001-6110-1081$$aGil-Imaz, A.$$uUniversidad de Zaragoza
000126312 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000126312 773__ $$g49, 1 (2023), 47-69$$pJ. iber. geol.$$tJOURNAL OF IBERIAN GEOLOGY$$x1698-6180
000126312 8564_ $$s6121705$$uhttps://zaguan.unizar.es/record/126312/files/texto_completo.pdf$$yVersión publicada
000126312 8564_ $$s1694825$$uhttps://zaguan.unizar.es/record/126312/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000126312 909CO $$ooai:zaguan.unizar.es:126312$$particulos$$pdriver
000126312 951__ $$a2024-11-22-12:07:46
000126312 980__ $$aARTICLE