000079313 001__ 79313
000079313 005__ 20230111103816.0
000079313 0247_ $$2doi$$a10.1016/j.sedgeo.2016.11.010
000079313 0248_ $$2sideral$$a97419
000079313 037__ $$aART-2017-97419
000079313 041__ $$aeng
000079313 100__ $$aAsta, María P.
000079313 245__ $$aTravertines associated with the Alhama-Jaraba thermal waters (NE, Spain): Genesis and geochemistry
000079313 260__ $$c2017
000079313 5060_ $$aAccess copy available to the general public$$fUnrestricted
000079313 5203_ $$aFreshwater carbonates are interesting archives in palaeoenvironmental reconstructions. However, more studies of those systems are needed to fully understand past environments. In this work the actively-forming travertines of the Alhama-Jaraba thermal system were studied for the first time in order to evaluate the relationship between the geochemical and mineralogical composition and the environmental conditions during their formation. With that aim, a combination of petrographical, mineralogical, geochemical and stable isotope analyses were carried out. These carbonates provide a natural laboratory for the study of the effect of different variables (natural and anthropogenic) on carbonate precipitation. The results showed that there is a close relationship between the mineralogy of the solid precipitates and the formation temperature, and only the samples formed from overheated waters (40–60 °C) show significant concentrations of aragonite. Aragonite-bearing samples show higher concentrations in Sr, Ba and U while calcitic solids are enriched in Mg. These differences could be attributed to mineralogy, temperature or different precipitation rates. The geochemical evaluation of the chemistry of both the solids and their parental waters suggests that differences in the rate of CO2-degassing and, in some cases, evaporation are the primary environmental controls on isotopic compositions. In addition, the results show that, if strong evaporation and CO2-degassing are involved, calcite precipitation occurs under conditions of isotopic disequilibrium with its parental water. The results of our study are useful to interpret old depositional environments and palaeotemperatures.
000079313 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/Juan de la Cierva Program
000079313 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000079313 590__ $$a2.575$$b2017
000079313 591__ $$aGEOLOGY$$b9 / 47 = 0.191$$c2017$$dQ1$$eT1
000079313 592__ $$a1.277$$b2017
000079313 593__ $$aStratigraphy$$c2017$$dQ1
000079313 593__ $$aGeology$$c2017$$dQ1
000079313 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000079313 700__ $$0(orcid)0000-0003-1463-1682$$aAuqué, Luis F.$$uUniversidad de Zaragoza
000079313 700__ $$aSanz, Francisco J.
000079313 700__ $$0(orcid)0000-0001-5645-9150$$aGimeno, María J.$$uUniversidad de Zaragoza
000079313 700__ $$aAcero, Patricia
000079313 700__ $$aBlasco, Mónica
000079313 700__ $$aGarcía-Alix, Antonio
000079313 700__ $$0(orcid)0000-0001-7275-9321$$aGómez, Javier$$uUniversidad de Zaragoza
000079313 700__ $$aDelgado-Huertas, Antonio
000079313 700__ $$0(orcid)0000-0001-7010-9165$$aMandado, Juan$$uUniversidad de Zaragoza
000079313 7102_ $$12000$$2685$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Petrología y Geoquímica
000079313 773__ $$g347 (2017), 100-116$$pSediment. geol.$$tSedimentary Geology$$x0037-0738
000079313 8564_ $$s976355$$uhttps://zaguan.unizar.es/record/79313/files/texto_completo.pdf$$yPostprint
000079313 8564_ $$s36779$$uhttps://zaguan.unizar.es/record/79313/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000079313 909CO $$ooai:zaguan.unizar.es:79313$$particulos$$pdriver
000079313 951__ $$a2023-01-11-10:04:10
000079313 980__ $$aARTICLE