000160896 001__ 160896
000160896 005__ 20251017144605.0
000160896 0247_ $$2doi$$a10.1344/GeologicaActa2024.22.13
000160896 0248_ $$2sideral$$a144093
000160896 037__ $$aART-2025-144093
000160896 041__ $$aeng
000160896 100__ $$aTorromé Sanz, Diego$$uUniversidad de Zaragoza
000160896 245__ $$aControls on carbonate deposition and microbialite formation in distal alluvial systems (Campanian, Montalbán subbasin, NE Spain)
000160896 260__ $$c2025
000160896 5060_ $$aAccess copy available to the general public$$fUnrestricted
000160896 5203_ $$aThe middle-upper Campanian Allueva Formation was deposited in the compressional intramountain Montalbán subbasin (central Iberian Ranges, NE Spain). This i.e. formation consists of alluvial terrigenous deposits, with local dominance of carbonates and microbialites, which are the main focus of this study. Three sfacies associations are differentiated: i) bioclastic facies association including limestone levels with accumulation of gastropods and charophytes, along with polygenetic carbonate breccias; ii) microbialite facies association dominated by irregular limestone beds rich in oncoids; iii) terrigenous facies association including metric levels of reddish-brown mudstone with intercalations of sandstones and conglomerates. These facies deposited in a low water level and short residence lacustrine-palustrine environments, in the distal areas of an alluvial system. Isotopic data (δ13C and δ18O) fall in the range of freshwater carbonates and support this interpretation. The most common microbialites are oncoids, which have been classified into six types based on their morphology, size, and lamination. Cyclic patterns in the lamination of oncoids have been related to changing wet and dry conditions. Our results suggest that the alluvial setting was mainly fed by meteoric waters, with a sub-humid climate gradually transitioning to more arid conditions.
000160896 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FEDER/E18 Aragosaurus-Recursos Geológicos y Paleoambientes$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-122612OB-I00
000160896 540__ $$9info:eu-repo/semantics/openAccess$$aby-sa$$uhttps://creativecommons.org/licenses/by-sa/4.0/deed.es
000160896 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000160896 700__ $$aMartín-Pérez, Andrea
000160896 700__ $$aKošir, Adrijan
000160896 700__ $$0(orcid)0000-0002-2430-7424$$aAurell, Marcos$$uUniversidad de Zaragoza
000160896 7102_ $$12000$$2280$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Estratigrafía
000160896 773__ $$g22, 13 (2025), 1-23$$pGeol. acta$$tGeologica Acta$$x1695-6133
000160896 8564_ $$s1465651$$uhttps://zaguan.unizar.es/record/160896/files/texto_completo.pdf$$yVersión publicada
000160896 8564_ $$s2090799$$uhttps://zaguan.unizar.es/record/160896/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000160896 909CO $$ooai:zaguan.unizar.es:160896$$particulos$$pdriver
000160896 951__ $$a2025-10-17-14:14:58
000160896 980__ $$aARTICLE